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- half toxic dose 半数中毒量
- Take the experimental rats into 8 groups including 3 groups for therapeutic dose,3 groups for toxic dose and 2 groups for lethiferous dose, with 10 rats for each group and male and female for half. 将实验小鼠（幼年）分成8组，其中治疗剂量3组，中毒剂量3组，致死剂量2组，每组10只，雌雄各半。
- Toxic doses can produce a febrile effect. 中毒剂量可产生发热作用。
- "There is very little difference between the effective dose and the toxic dose of most anesthetics. “大多数麻醉剂的有效剂量和中毒剂量之间只有细微的差别。
- We infer that the minimum toxic dose should be below 10mg/L in cultured human tooth germ in vitro . 因此推断，在人牙胚体外培养中，氟产生毒性作用的最小剂量应低于10mg/L。
- The toxic dose of theobromine is 100-150 mg/kg of body weight.It turns out that different types of chocolate have different amounts of theobromine. 可可碱的中毒剂量是每公斤体重100到150毫克，不同品种巧克力中可可碱的含量不同。
- Since toxic dose and therapeutic dose are very close, strychnos poisoning symptomand pathological changes after strychnos poisoning are reviewed. 本文结合文献，从化学成分、中毒剂量、毒理作用、中毒症状、病理变化等方面，对马钱子的毒理学研究进展进行综述。
- Because of its officinal value,strychnos is widely used by clinic and individual.Since toxic dose and thera-peutic dose are very close,strychnos poisoning cases are frequently reported. 由于马钱子有较明显的药用价值,因此临床及民间个人应用较多,又因马钱子治疗剂量与中毒剂量较接近,故常有马钱子中毒甚至致死的案例报道。
- Study on Urea Toxic Dose in Rabbit 兔尿素的中毒剂量
- The repiratory and other subcortical centers likewise show stimulation after low doses and depression with higher or toxic doses. 呼吸中枢和其他皮层中枢同样表现为小量时兴奋，大量或中毒量抑制。
- The respiratory and other subcortical centers likewise show stimulation after low doses and depression with higher or toxic doses. 呼吸中枢和其他皮层中枢同样表现为小量时兴奋,大量或中毒量抑制。
- I apportioned half the property to each of them. 我把财产的一半分配给他们各人。
- She reckoned she had cut her cost by half. 她估计她减少了一半的费用。
- I worried half the night and have a fitful sleep. 我半个晚上都一直在担心，故而时醒时睡。
- The factory had been sending out toxic fumes. 这家工厂一直在排放有毒的废气。
- He can fling off a poem in half an hour. 他可以在半小时之内草就一首诗。
- It took him half an hour to finish the work. 他花了半个小时做完这项工作。
- I usually go to bed at half past ten. 我通常十点半睡觉。
- Half the fruit crop froze out in the sudden cold. 一半的水果作物在突如其来的寒流中被冻死。
- Half the oil in the lamp had burnt away. 油灯中一半的油已经烧掉了。
