half lethal dose 半数致死剂量 ; 半致死量 ; 半致死剂量 ; 半数致死量
half lethal time 半致死时间
half lethal concentration 半致死浓度 ; 半数致死浓度
HLD half lethal dose 半数致死量
half-lethal dose 半数致死剂量 ; 半致死剂量
dose half-lethal 半数致命剂量
Time of Half Lethal 半数死亡时间
The Time of Half Lethal 死亡时间 ; 半数死亡时间
half-lethal 半致死
And half lethal dose was several hundred folds than the clinical dose.
半数致死量是推荐临床剂量的几百倍。
Through experiments have found that: when the concentration of heavy metals in the soil is 0.5 percentages, it fits the half lethal dose.
通过实验发现：当土壤中重金属的含量为0.5%时，最符合蚯蚓的半数致死量。
For copper, she said, the LC50 (the concentration lethal to half of any given species over a certain time) decreases with temperature - meaning that toxicity increases.
她说，对于铜来说，半数致死浓度lc50(一定时间内受试动物半数死亡的毒物浓度)随温度减弱-这就意味着毒性增加。
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