| 单词 |
micron |
| 释义 |
micron|ˈmaɪkrɒn|
Also † mikron.
[ad. Gr. µῑκρόν, neut. of µῑκρός small.]
The one-millionth part of a metre; denoted by the symbol µ.
In the International System of Units the word has been replaced by micrometre.
[1880Procès-Verbaux des Séances du Comité Internat. des Poids et Mesures 1879 41 Le Comité international des Poids et Mesures adopte, pour ses publications et son usage officiel, le système suivant des signes abréviatifs pour les poids et mesures métriques... (table) Mesures de longueur... Micron... µ.] 1885Jrnl. R. Microsc. Soc. V. 140 Proposal..(2) to use micron in place of micromillimetre. 1892Barker Physics 15 Divided into..thousandths of a millimeter; i.e. into microns. 1898Ld. Kelvin in Rep. Brit. Assoc. 783 Measured wave-lengths as great as 15 mikrons in radiant heat. 1905Brit. Med. Jrnl. 25 Feb. 404 The lymphocytes showed all variations in size, from the smallest to some which were 15 microns in diameter. 1966Electronics 14 Nov. 25 The detector..is believed to be the first photovoltaic detector of infrared radiation in the 8- to 14-micron range. 1968[see micrometre]. |
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