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2025-07-19

“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’.
“femto-”的英英意思

 

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