| 单词 | mass unit |
| 释义 | mass unit (once / 3939771 pages) n WORD FAMILY mass unit USAGE EXAMPLESThe technique behind the new clock could be used to replace the standard kilogram with a new, quantum mechanical definition of the mass unit. Science Magazine(Jan 11, 2013) n a unit of measurement for mass Hypo|Hyper atomic mass unit unit of mass for expressing masses of atoms or molecules mass number, nucleon numberthe sum of the number of neutrons and protons in an atomic nucleus avoirdupois unitany of the units of the avoirdupois system of weights metric weight unit, weight unita decimal unit of weight based on the gram sluga unit of mass equal to the mass that accelerates at 1 foot/sec/sec when acted upon by a force of 1 pound; approximately 14.5939 kilograms grain1/7000 pound; equals a troy grain or 64.799 milligrams dram1/16 ounce or 1.771 grams ounce, oz.a unit of weight equal to one sixteenth of a pound or 16 drams or 28.349 grams lb, pound16 ounces avoirdupois half pound8 ounces avoirdupois quarter pound4 ounces avoirdupois stonean avoirdupois unit used to measure the weight of a human body; equal to 14 pounds quartera quarter of a hundredweight (25 pounds) cwt, hundredweight, long hundredweighta British unit of weight equivalent to 112 pounds cental, centner, cwt, hundredweight, quintal, short hundredweighta United States unit of weight equivalent to 100 pounds gross ton, long ton, tona British unit of weight equivalent to 2240 pounds net ton, short ton, tona United States unit of weight equivalent to 2000 pounds kilotonone thousand tons megatonone million tons mcg, microgramone millionth (1/1,000,000) gram mg, milligramone thousandth (1/1,000) gram nanogram, ngone billionth (1/1,000,000,000) gram grain, metric graina weight unit used for pearls or diamonds: 50 mg or 1/4 carat decigram, dg1/10 gram carata unit of weight for precious stones = 200 mg g, gm, gram, grammea metric unit of weight equal to one thousandth of a kilogram gram atom, gram-atomic weightthe quantity of an element whose weight in grams is numerically equal to the atomic weight of the element gram molecule, mol, molethe molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the Systeme International d'Unites dag, decagram, dekagram, dkg10 grams hectogram, hg100 grams kg, kilo, kilogramone thousand grams; the basic unit of mass adopted under the Systeme International d'Unites myg, myriagramone ten thousandth of a centner centnerin some European countries: a unit of weight equivalent to 50 kilograms centner, doppelzentner, hundredweight, metric hundredweighta unit of weight equal to 100 kilograms quintala unit of weight equal to 100 kilograms MT, metric ton, t, tonnea unit of weight equivalent to 1000 kilograms unit, unit of measurement any division of quantity accepted as a standard of measurement or exchange |
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