lethal concentration 50的例句大全

Preliminary Test on the Effect of Antibiotic on the Lethal Concentration 50% of Veliger Larva of Chlamys farreri

抗生素对栉孔扇贝面盘幼虫半致死浓度的初步试验

Methods Immersion method of pesticide was used to assay the medium lethal concentration ( LC_ 50) of the fourth-instar larvae.

方法采用浸渍法，测定Ⅳ龄期幼虫的半数致死浓度（LC50）。

The extract had higher toxic killing effect on Euproctis bipunctapex larvae. However, the effect was lower. The median lethal concentration ( LC_ ( 50)) for the larvae treated for 72 h was ( 0.03227%).

雷公藤提取物对乌桕毒蛾幼虫具有较高的毒杀作用，但表现比较缓慢，处理72h后的死亡中浓度LC50为0.03227%。

The half lethal concentration of 48? h-LC_ ( 50) of 21 nitrobenzenes to Daphnia carinata was determined by use of the standard test method, and the range of toxicity was from 3.49 for nitrobenzene to 5.40 for 1,4-dinitrobenzene.

采用标准实验方法测定了21种硝基苯类化合物对隆线蚤（Daphnia carinata）的48h半致死浓度值，结果lg（1/LC50）的范围在349～540之间；

The median lethal time ( LT_ ( 50)) of P_ ( f) NPV to the larvae was shortened with the increase of the viral concentration.

各测试浓度下致死中时间（LT（50）为3.43-5.14天，随病毒浓度提高而缩短。