femtometre

名词 n.
中文释义

英文释义

名词 n.
  1. An SI unit of length equal to 10⁻¹⁵ metres. Symbol: fm
    — Holonyms: picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre < zettametre < yottametre < ronnametre < quettametre

词形变化

femtometres plural

词源

Etymology tree
Proto-Indo-European *pénkʷe
Proto-Germanic *fimf
Proto-Indo-European *déḱm̥
Proto-Germanic *tehun
Proto-Germanic *fimftehun
Old Norse fimmtánder.
Danish femtender.
English femto-
English metre
English femtometre
From femto- + metre.
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