“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	locally finite complex locally finite covering locally finite family locally finite family of sets locally finite graph locally finite group locally finite module locally finite quiver locally finite radical locally finite semigroup locally finite space locally finite sum locally flat locally flat connection locally flat embedding locally flat manifold locally flat point locally flat structure locally flat submanifold locally flat transfer locally free group locally free module locally free sheaf locally gauge invariant Lagrangian for a gauge theory locally generated sheaf

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