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

单词	median lethal concentration
释义	median lethal concentration Encyclopedia 工学钻井液释 median lethal concentration；LC50半致死浓度动物急性毒性实验中，在一定时间内（一般取24小时）使受试动物半数死亡的毒性浓度。用LC50表示。工学半数致死浓度释 median lethal concentration半数致死浓度使一组实验动物在经呼吸道接触外源化学物一定时间（一般固定2或4小时）后死亡50%所需的浓度，用LC50表示。
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