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单词 femto-
释义 fem·to-
\¦fem(p)(ˌ)tō\ combining form
Etymology: International Scientific Vocabulary, from Danish or Norwegian femten fifteen (from Old Norse fimmtān) + -o- — more at fifteen
: one quadrillionth (10-15) part of
 < femtosecond >
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更新时间:2024/11/11 19:05:25