英语词汇“light second”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词

light second

释义

Noun: light second

The distance light travels in a vacuum in one second; approximately 300,000 kilometres

Derived forms: light seconds

Type of: astronomy unit

Part of: light year, light-year

Encyclopedia: Light second

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