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单词 momentum
释义
momentummo‧men‧tum /məʊˈmentəm, mə- $ moʊ-, mə-/ ●○○ noun [uncountable] Word Origin
WORD ORIGINmomentum
Origin:
1600-1700 Latin ‘movement, moment’, from movere ‘to move’
Examples
EXAMPLES FROM OTHER DICTIONARIES
  • As the slope got steeper, the sled gathered momentum.
  • Carey's momentum carried him past the base.
  • The ball was moving along, slowly losing momentum on the bumpy ground.
  • We are trying to measure the position and momentum of an electron as accurately as possible.
EXAMPLES FROM THE CORPUS
  • Gonzalez insisted that fears of lost momentum should not be a concern.
  • It closes very rapidly and has considerable momentum.
  • Missile defence has a political momentum that makes a supposedly awkward question such as whether it really works pale almost into irrelevance.
  • On the Look-Out derives extra momentum from this eccentric procedure.
  • Players skate around the ice with realistic momentum, ie you have to slow down to turn round.
  • Raymond is traveling full speed downhill on his own momentum.
  • The attacker's own momentum pushes him forward on to the blow.
  • While critics of his decision gained momentum Thursday, the record shows they face an uphill battle.
Thesaurus
Longman Language Activatorto move or work faster
· Could you go a little faster? We don't want to miss our plane.move/work etc faster · You'll have to work a lot faster than this.faster and faster (=more and more quickly) · I could feel my heart beating faster and faster.
to make something happen more quickly: · Nancy, if you don't speed up we'll be here until midnight.speed something up: · I'll phone the manager and get them to speed things up.speed up something: · The company announced they're speeding up plans to expand the site.
if a vehicle, especially a large vehicle picks up speed or gathers speed , it starts to gradually move faster: · Francis leaned back in his seat as the plane picked up speed.· The truck was already moving, gathering speed with a deep-throated roar.
if a vehicle or driver accelerates , they go faster, especially suddenly: · The Ferrari Mondial can accelerate from zero to 60 mph in 6.3 seconds.· The truck's wheels skidded on the snow as the driver accelerated forward.
written to begin to walk faster - use this especially in stories or descriptions of events: · Suddenly realizing he was late, he quickened his pace towards the hotel.· "I have some questions to ask you, Mr Murray,'' said the reporter, quickening his pace to keep up with me.
if something gains or gathers momentum , it travels faster and faster, especially going down a hill, because it is pushed forward by the force of its own weight: · Gradually the train gathered momentum, and within seconds it was moving at top speed.· The slope was getting steeper and their sledge was gaining momentum all the time.
not able to speak
· The train's designers claim it is capable of attaining speeds in excess of 350 kph.· sensors which monitor speed and body movementspeed of · What was the speed of the car at the time of the accident?· the internal processing speed of a computerat a speed of 50 mph/10 metres per second etc · The Earth moves round the Sun at a speed of 30 km per second.at a constant/steady speed (=keeping the same speed all the time) · Keep driving at a constant speed until I tell you differently.top speed (=the fastest speed that a car, plane etc can reach) · The Ferrari Testarossa has a top speed of 188 mph.
how fast things happen, change, or develop: at a faster/slower/different etc rate: · Individual children develop physically and emotionally at different rates.at an alarming rate (=very fast): · Our money was running out at an alarming rate.rate of: · The amount of light available will determine the plant's rate of growth.· equipment that can load ships at a rate of 5000 tonnes a day
how fast someone walks or runs, or how fast they work or do things: at a brisk/steady/gentle etc pace: · The soldiers were marching at a steady pace.at a leisurely pace (=at a slow comfortable speed): · We climbed at a leisurely pace, stopping occasionally to enjoy the view.pace of: · The pace of political change has been rapid.pace of work/life: · I'm enjoying the relaxed pace of life of Jamaica.at your own pace (=at a speed that is right for you): · The Kumon method involves students learning at their own pace.
the speed at which something moves in a particular direction - use this especially in technical contexts: · This instrument is used for measuring wind velocity.velocity of: · an experiment to try to predict the velocity of a moving objecthigh velocity: · a beam of high velocity electrons
the force that makes a moving object keep moving: · We are trying to measure the position and momentum of an electron as accurately as possible.gain/gather momentum (=move faster): · As the slope got steeper, the sled gathered momentum.lose momentum (=move slower): · The ball was moving along, slowly losing momentum on the bumpy ground.
use these expressions to say how fast something moves: · The maximum speed on British motorways is 70 miles per hour.· Sound travels through the air at about 340 metres per second.· a propeller that revolves at a rate of 150 revolutions per minute
WORD SETS
ball bearing, nounbelt, nouncog, nouncombustion chamber, nounconveyor belt, nouncoolant, nouncooling system, nouncrank, verbdifferential, noundisengage, verbdismantle, verbdrive, nounfour-stroke engine, nounfuel cell, nounfulcrum, noungear, nounheat pump, nounhydraulic, adjectiveinertia, nounmechanical, adjectivemechanical engineering, nounmill, nounmillstone, nounmillwheel, nounmomentum, nounmotive, adjectiveneutral, nounnuclear reactor, nounoil pan, nounpivot, nounpropulsion, nounpulley, nounpump, nounrace, verbratchet, nounreactor, nounregulate, verbretract, verbrev, verbrev, nounrotor, nounselector, nounstarter motor, nounstress, nounstressed, adjectivestrip, verbsump, nounsupercharged, adjectivetemplate, nountop gear, nountorque, nountwo-stroke, adjectiveuniversal joint, nounvalve, nounwheel, nounwinch, nounwindlass, noun
Collocations
COLLOCATIONS FROM THE ENTRYverbs
(=become more and more successful)· The show gathered momentum over the next few months and became a huge hit.
(=make something become more successful)· The agreement was small, but it gave new momentum to the talks.
(=make something continue at the same pace)· The party was determined to maintain the momentum of reform.
(=to start to become less successful)· The team seems to have lost its momentum.
(also sustain the momentum formal) (=keep being successful)· Hopefully we can keep the momentum going and win the next game as well.
adjectives
(=that cannot be stopped)· The social changes began to gather irresistible momentum.
COLLOCATIONS FROM OTHER ENTRIES
(=keep increasing)· In the 1850s and 1860s, the British colonisation of India gained momentum.
COLLOCATIONS FROM THE CORPUSADJECTIVE
· Similar effects operate for d orbitals, but not for s orbitals, which have no orbital angular momentum.· How did the planets pick up the necessary angular momentum, and why do the planets have different chemical compositions?· The resulting system could have a huge angular momentum with a very well-defined direction.· Other factors also come into account such as the angular momentum of the two bodies.· How is it, then, that the correspondence with the angular momentum of classical physics is to be made?· The situation is similar with any other classically measurable property of a system, not just angular momentum.
· The aggressor's own forward momentum even strengthens the force of the counter-blow against him.· She left, and it took her partner a year to build the forward momentum she had disrupted by her sudden departure.
· The Buddhist revival gained momentum in the 1870s after a series of public debates between Buddhist and Protestant preachers increased Buddhist self-confidence.· A price was certainly to be paid later, when criticisms that grammar-school standards had been destroyed gained momentum and credibility.· The vehicle gained momentum as the road dipped.· As the binary policy gained momentum, it remained possible to have that impression.
· The deterioration in MacDonald rapidly gathered momentum.· Shares in the food and drinks conglomerate surged by 8 percent in a week as speculation about a bid gathered momentum.· As the J-Boat bandwagon gathered momentum, other designs took shape on Rod Johnstone's board.· It probably even gathered momentum from Tom's absence.· Taxis vanished as the rain gathered momentum, and he was obliged to take the Métro from Etoile to Concorde station.· Throughout 1989 and 1990 the organization gathered momentum.· Moisture ran from her brow as the fire flourished and crackled and the pressure inside her gathered fearful momentum.· Moves towards a more active and coherent Community regional policy gradually gathered momentum throughout the 1960s.
· It was a process which had been gathering momentum for some time and has continued since.· If it is accepted that general management is still gathering momentum, more may yet be to come.· However public protests are also gathering momentum as people realize that shrimp farming seems to be a recipe for disaster.· Once in the lead there was no stopping the home side as they reinforced their gathering momentum with five second-half tries.
· Missile defence has a political momentum that makes a supposedly awkward question such as whether it really works pale almost into irrelevance.
NOUN
· Suppose it is a momentum state.· First let us recall our description of a momentum state.· But position states are not orthogonal to momentum states.· What does a momentum state look like as a 4,-curve?· It is what allows us to compose momentum states out of position states, or position states out of momentum states.· The momentum states will also be represented in this same Hilbert space.
VERB
· Once they began, they acquired momentum of their own, and the size of the purge made it credible.· And if both went well, he might acquire a momentum of success.· One is that, as David Mellor or several members of the royal family might attest, cumulative disclosures acquire momentum.· Since Wilder announced his candidacy in September 1991, his campaign had failed to acquire any significant momentum.
· Such factors have conspired to add momentum to the drive for even greater central control by government.· With added momentum, the mob turned its vengeance on the black populace.· The 9 percent PacTel vote adds momentum to this campaign.· The protest added to momentum created during a larger demonstration Monday in the central business district.
· Forest began to lose momentum in the second half and found themselves forced to defend for longer periods.· Once they began, they acquired momentum of their own, and the size of the purge made it credible.· The project began to generate a momentum of demolition of its own.· The back of my car began to gain momentum.· In 1989/90 a further group moved to Leatherhead and another to Wandsworth as the church planting began to gain momentum.· The crowds in the church, where protest meetings began to gain momentum last month, applauded the bishop.
· It was to take a year and a half to build up the momentum for the Hot Autumn.· She left, and it took her partner a year to build the forward momentum she had disrupted by her sudden departure.· The mailings outlined all sorts of promotions concocted to build momentum for this newest high-end getaway.· The speaker had built sufficient momentum to survive his mistake.· They thus built on the momentum they had gained in convention by moving about among the people.· But that has allowed Forbes to build the momentum that Dole now seeks to regain.· The important thing is to win every game we can and build some momentum.· The pair, assigned to cover the Fox campaign, watched as it slowly built momentum.
· The strikes continue to gather momentum.
· Heseltine's campaign team, having been canvassing backbenchers for several weeks, had already developed a considerable momentum.· Long before that, however, Emor had developed its own momentum.· And so the assembly developed a momentum of its own.
· The escaping gas gains a momentum in one direction and so the astronaut gains an equal momentum in the opposite direction.· Clay Shaw of Florida, has failed to gain momentum, and time is running out.· The Axiam judders and shakes like a very early classic bike then slowly gains momentum rather than actually accelerating.· If he could emerge triumphant from those events, he believed he would gain the momentum to win the White House.· The escaping gas gains a momentum in one direction and so the astronaut gains an equal momentum in the opposite direction.· Biological and entomological studies gained momentum through the photographic record.· If a punch is aimed at the face, the defender steps out to intercept it before it gains momentum.· One piece of legislation that has gained momentum amid the concern about workers is a bipartisan bill sponsored by Sen.
· I waited for it to gather momentum.· The strikes continue to gather momentum.· Nevertheless, the fortress of autocracy had been breached and liberal pressure for further reform could be expected to gather momentum.· About the time this outcry was gathering momentum, a curve ball landed like a left hook.· With the wind and waves astern Nada gathered momentum: no turning back now.· Such is the delight that people take in seeking out follies at weekends that the Fellowship has quickly gathered momentum.· The principle that nature worked by the simplest means was gathering momentum during the thirteenth century.· The middle-school initiative, as it gathered momentum in the 1960s, was concerned with a great deal more than legalistic terminology.
· That has given momentum to the rumour that Merson and Graham clashed verbally over the player's weight on Monday.· The first is whether the South Carolina result would give Bush the momentum to win in Michigan.· I was impressed and it also gave me a lot of momentum for the album.· A loss would give momentum to the idea of dumping him at the party convention in July.
· It's vital to keep momentum and motivation going.· How can you keep the momentum?· It helps to relax you and provides a beat to keep the momentum going.· Rice wanted to keep the momentum going that had produced such positive short-term results. 2.· This continues to happen back and forth, always keeping the momentum total zero.· That idea, once dismissed as nonsense, keeps gaining momentum.· They have had to keep the momentum going, too.· He needs to give the staff pep talks, keep momentum alive.
· Forest began to lose momentum in the second half and found themselves forced to defend for longer periods.· Meanwhile, under the pressure of new events, most of the other initiatives had lost momentum.· Resistance comes from mobile electrons losing momentum in scattering and is usually inevitable except in superconductivity.· They worry that the university may lose the momentum it has gained since opening for classes in the fall of 1990.· She lost momentum thinking about it, and he fell asleep before he climaxed.· The pace of new auto loans also lost momentum from a month earlier.· The vote fell by 6.2 percent, and the party has lost all momentum.· Gonzalez insisted that fears of lost momentum should not be a concern.
· To maintain the upward momentum, Parke must keep his ambitions high, yet keep his feet on the ground.· He is committed to maintaining that momentum.· Johnson maintained the momentum with baskets.· To be blunt about it, the challenge confronting Mr Heseltine is how to maintain his momentum.· He ignored complaints from alarmed consumer groups in order to maintain popular momentum for a measure he regards as essential.· Mr Tung must maintain momentum towards democratic reforms, increasing the number of directly elected representatives in the territory's legislature.· Arizona State maintained a shred of momentum early in the second half.
· Rosler's arrival certainly saw the visitors pick up their attacking momentum.
· This feature can be used to provide simulated inertia and momentum.· Success, market valuation and cash flow provide a powerful momentum.· In those circumstances, the displacement system provides its own self-fulfilling momentum.· The weight of the fly wheel can provide so much momentum by being kicked judiciously that it can rotate continuously.
· Could she not sustain the momentum, not just on tradesmen's credit but on borrowed money?· The Government are committed to sustaining the momentum of parliamentary reform.· Its activities enabled the Heseltine campaign to seize the initiative and sustain a momentum which kept its opponents mostly on the defensive.
Phrases
PHRASES FROM OTHER ENTRIES
  • I said as the train gathered speed.
  • I waited for it to gather momentum.
  • She lifted it over the fence and set off across the little meadow, gathering speed and thoroughly enjoying it.
  • The big trimotor gathered speed and roared off down the harbor for more than a mile but never got close to liftoff.
  • The strikes continue to gather momentum.
  • Then the van rolls forward, gathers speed, and drifts on by.
  • These Christians were slow to gather forces for a Reconquista.
  • Voucher trouble Shopworkers' union Usdaw has threatened to boycott the government's voucher system for asylum seekers as protests gather momentum.
Word family
WORD FAMILYnounmomentmomentumadjectivemomentarymomentousadverbmomentarily
1the ability to keep increasing, developing, or being more successfulgain/gather momentum The campaign for reform should start to gather momentum in the new year. incentives to maintain the momentum of European integration Governments often lose momentum in their second term of office.momentum of the momentum of increasing immigrationmomentum towards the momentum towards economic union2the force that makes a moving object keep movinggain/gather momentum (=move faster) The wheel was allowed to roll down the slope, gathering momentum as it went. Pratt, without losing any momentum at all, passed them both and won the race.3technical the force or power that is contained in a moving object and is calculated by multiplying its weight by its speedmomentum of the momentum of a particleCOLLOCATIONSverbsgain/gather/build up momentum (=become more and more successful)· The show gathered momentum over the next few months and became a huge hit.give something momentum (=make something become more successful)· The agreement was small, but it gave new momentum to the talks.maintain momentum (=make something continue at the same pace)· The party was determined to maintain the momentum of reform.lose momentum (=to start to become less successful)· The team seems to have lost its momentum.keep the momentum going (also sustain the momentum formal) (=keep being successful)· Hopefully we can keep the momentum going and win the next game as well.adjectivesirresistible (=that cannot be stopped)· The social changes began to gather irresistible momentum.
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更新时间：2024/12/23 11:40:13