“lethal concentration 50”的概念、定义、翻译、参考文献-科学参考

单词	lethal concentration 50
释义	lethal concentration 50 Encyclopedia 理学半数致死浓度释 lethal concentration 50 ；LC50半数致死浓度能使一群动物在接触外源化学物一定时间后并在一定观察期限内死亡50%所需的浓度。衡量存在于水中的毒物对水生动物和存在于空气中的毒物对哺乳动物乃至人类的毒性大小的重要参数。一般以毫克/米3表示空气中的外源化学物浓度，以毫克/升表示水中的外源化学物浓度。
随便看	Bashraf and Sama'i Ba-Shu Ba-Shu Matel-rimmed Lacquer from Yangzishan basic basic adsorption refrigeration cycle basic agricultural extension service system construction project basic algebra basic algebraic operation basically available basic aluminium air cell basic amino acid basic anxiety basic arithmetic operation Basic Arts Education basic assumptions in quantum mechanics basic attribute of electronic records basic block basic buret basic catalyst basic cell basic characteristics of discontinuity basic characteristics of instrument basic characteristics of resistance strain gauge basic characteristics of vegetation basic chemical

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