| 单词 | oscillation |
| 释义 | oscillation (once / 4244 pages) n Oscillation is the process of moving back and forth regularly, like the oscillation of a fan that cools off the whole room, or the oscillation of a movie plot that makes you laugh and cry. Oscillation is from the Latin word oscillare for "to swing," so oscillation is when something is swinging back and forth. Rumor has it if you trace the word back far enough, you get to the word for “a little face” of Bacchus, Greek god of wine, people used to hang up in vineyards to swing in the breeze. When there's oscillation, something is going back and forth, like a hanging sculpture going to and fro in the backyard. WORD FAMILYoscillation: oscillations+/oscillate: oscillated, oscillates, oscillating, oscillation, oscillatory/oscillatory: nonoscillatory USAGE EXAMPLESPredation helps to stabilize food chains by buffering oscillations in the availability of carrion, which are linked to climate events and disease epidemics. Nature(Dec 20, 2016) Many younger physicists don’t understand that the SNO results and the solution of the solar neutrino problem do not involve neutrino oscillations, he says. Science Magazine(Dec 14, 2016) It’s not hard to induce gamma oscillations naturally: Our neurons achieve such synchrony when we are learning, paying attention or engaging our short-term memory. Seattle Times(Dec 07, 2016) 1n a single complete execution of a periodically repeated phenomenon Syn|Hypo|Hyper cycle cardiac cycle the complete cycle of events in the heart from the beginning of one heart beat to the beginning of the next; an electrical impulse conducted through the heart muscle that constricts the atria which is followed by constriction of the ventricles Carnot cycle, Carnot's ideal cyclea cycle (of expansion and compression) of an idealized reversible heat engine that does work without loss of heat passone complete cycle of operations (as by a computer) menstrual cyclea recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy; if pregnancy does not occur the lining is shed at menstruation periodic event, recurrent event an event that recurs at intervals 2n the process of oscillating between states Hypo|Hyper libration (astronomy) a real or apparent slow oscillation of a moon or satellite action, activity, natural action, natural process a process existing in or produced by nature (rather than by the intent of human beings) 3n (physics) a regular periodic variation in value about a mean Syn|Hypo|Hyper vibration ripple (electronics) an oscillation of small amplitude imposed on top of a steady value transient(physics) a short-lived oscillation in a system caused by a sudden change of voltage or current or load beata single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations resonancea vibration of large amplitude produced by a relatively small vibration near the same frequency of vibration as the natural frequency of the resonating system sympathetic vibration(physics) vibration produced by resonance undulation, wave (physics) a movement up and down or back and forth |
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