“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	method of community classification method of comparison method of competitive selection of cadres method of complete induction method of complex integration method of compound interest method of computation method of confidence intervals method of conjugate gradients method of conjugate nets method of constant stimulus method of constant variation method of construction method of construction with ruler and compasses method of contiguity method of continuity method of contour integration method of convolution method of coordinate setting-out method of counting volume of earthwork in ancient method of counting volume of earthwork in ancient china method of critical path method of curriculum development in vocational education method of cutting circle method of cutting plane

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