| 释义 |
speed of light短语¹⁵⁹¹⁴
基本英英近义反义例句
光速
Noun:
the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second近义词 C字母Clight speed光速
Thespeed of lightis an important constant.光速是一个重要的常数。 |