英语词汇“rest mass”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	rest mass
释义	rest mass noun Physics The mass of a body when at rest.The concept of the rest mass derives from special relativity.... The neutrino was known from the start to be an extraordinarily light particle, perhaps massless, since its rest mass could never be detected. Any object with a non-zero rest mass (like a dust mote) can never reach light speed.
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