Read Edit View history 飛秒 fēimiǎo femtosecond Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 飞秒/ 飛秒 fēimiǎo femtosecond femtosecond; a unit of time equal to one quadrillionth of a second Edit Delete References Add reference No references for this word.
飞秒/ 飛秒 fēimiǎo femtosecond femtosecond; a unit of time equal to one quadrillionth of a second Edit Delete