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单词 micron
释义 micron
 /muy"kron/,  n.  ,  pl.   microns, micra /-kreuh/.
  1. Also called micrometer. the millionth part of a meter. Symbol: µ, mu
  2.  Physical Chem.   a colloidal particle whose diameter is between 0.2 and 10 microns.
  3.  Physics.   a very small unit of pressure, equal to that exerted by a column of mercury 1µ high.
 Also, mikron.
 [1880-85; < Gk mikrón a little, n. use of neut. sing. of mikrós small; see -ON1]
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更新时间:2024/12/23 17:38:10