“femto-”的英英意思

单词	femto-
释义	femto-, prefix|ˈfɛmtəʊ| [ad. Da., Norw. femt-en fifteen + -o.] Prefixed to the names of units in metric systems to form the names of units 1015 times smaller. 1961Symbols, Units & Nomencl. Physics (Internat. Union Pure & Appl. Physics) 5 (heading) The following prefixes should be used to indicate decimal fractions or multiples of a unit... Femto.1963Nature 16 Mar. 1056/1 The International Committee [on Weights and Measures]..adopted two new prefixes for denoting sub⁓multiples of units. They are: femto, 10-15, symbol ‘f’.

　

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