Astronomy. As a modifier, designating units of length that are equal to the distance travelled by light in a vacuum in a specified amount of time…
| 单词 | θ76310 |
| 释义 | the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > speed of light > distances travelled (2) light second1908 Astronomy. As a modifier, designating units of length that are equal to the distance travelled by light in a vacuum in a specified amount of time… light minute1925 Astronomy. As a modifier, designating units of length that are equal to the distance travelled by light in a vacuum in a specified amount of time… |
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