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rem (roentgen equivalent man)的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 rem:
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a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
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(Roentgen Equivalent Man) the dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays
