英语词汇“hard cosmic ray”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	hard cosmic ray
释义	hard cosmic ray hard cosmic ray [′härd ¦käz·mik ′rā] (nucleonics) A cosmic-radiation component that penetrates a moderate thickness of an absorber, such as 4 inches (10 centimeters) of lead.
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