“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	South Canal South Carolina State South Caucasia south celestial pole South Centre south China South China Art Academy south china basin South China Block South China Eea monsoon circulation South China Field Mouse South China Film Industry Workers Union South China Fisheries Science South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China South China Karst World Natural Heritage South China minerogenetic province South China Morning Post South China Normal University South China Sea Fisheries Research Institute South China Sea I South China Sea Institute of Oceanology，SCSIO South China Sea of Nine-Dash Line South China Sea- Western North Pacific monsoon South China Study Society South China Tiger

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