mean lethal dose

例句：

1. 1.The drug had a mean lethal dose of 0.5 mg per kilogram of body weight.
   该药物的致死剂量为每公斤体重0.5毫克。
2. 2.The research team found that the mean lethal dose for this poison was 100 mg.
   研究小组发现这种毒药的致死剂量为100毫克。
3. 3.The manufacturer claims that their product has a mean lethal dose of 10,000 times less than the standard.
   制造商声称其产品与标准相比，致死剂量低了10,000倍。