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- median lethal temperatures (LT50) 抗寒锻炼
- median lethal temperature 半数致死温度
- A SAS program to calculate median lethal dosage (LD_(50)) of pesticides, named LD50-SAS, was developed based on the algorithms established by Bliss. 基于Bliss概率单位法,编写了用于计算半数致死量(LD50)的SAS程序(LD50-SAS)。
- The virulence of both mutants, as represented by median lethal dose (LD50), was not significantly different from that of the parental strain. 因此，细胞溶解毒素可能不是主要的致死因子，也不是创伤弧菌造成细胞毒杀作用的唯一因素。
- The median lethal dose(LC50)of 4kinds of heavy metals to S.henanense were decreased with the prolonging of the treating time. 4种重金属对河南华溪蟹的半致死剂量（LC50）随处理时间的延长而减小。
- The incipient lethal temperature are shiftedupward by acclimation to warmer temperature. 四角蛤蜊起始致死温是随驯化温度的变化而改变。
- And the values of 48 h median lethal concentration ( LC 50 ) and safe concentration ( SC ) of methamidophos for European eel larvae were 35.9 mg/L and 3.6 mg/L respectively. 甲胺磷乳剂对欧洲鳗仔鳗的半致死浓度（48h－LC50）为35.;9mg/L，安全浓度（SC）为3
- METHOD:We detected median lethal dose(LD 50 )of mixture of scopolamine (SCO) and chlorpromazine(CPZ) in the different dose to mice and rats by Bliss and Brownlee sequential trial. 方法：用Blis法和Brownle序贯法分别测定不同比例东莨菪碱与氯丙嗪组合成不同比例东氯合剂后对小鼠、大鼠的半数致死量（LD50）。
- Optimum temperature for the growth of 25-27 degrees Celsius, 1 degree Celsius minimum, the lethal temperature to 51-51.5 degrees centigrade. 生长发育最适温度为25-27摄氏度，最低1摄氏度，致死温度为51-51.;5摄氏度。
- The results showed that both incipient lethal temperature (TL50) and critical temperature maximum (CTM) increased as the acclimation temperature increased. 结果表明,两种动物的起始致死温度(TL_(50))和最高临界温度(CTM)随驯化温度的升高而增大;
- The median lethal doses(LD_(50)) of single Knoxia valerianoides Thorel. et Pitard,Daphne genkwa Sieb. et Zucc,Glycyrrhiza uralensis Fisch and their various proportions were determined with the method of peritoneal injection in healthy mice. 以健康小鼠腹腔注射法测定单味大戟、芫花与甘草及其不同比例的半数致死量(LD_(50))。
- At the treatment of the sublethal dosage and median lethal concentration, the comparison between the life of female and male adult and the ck was non significant or they could be prolonged. 结果显示：高浓度下，寿命缩短；
- Critical lethal temperature (LT 50 ) of apricot pink flower buds and full blooming flower in six different ecologic regions was determined with electrolyte leakage and logistic equation. 用电导法配以Logistic方程，测定了6个不同生态地区杏（apricot）品种花蕾和盛开花朵的半致死温度（LT50）。
- Above the lethal temperature, temperature increase contributes to the destruction of the organisms. Therefore, the lethal effect of the warming and cooling process should also be taken into account. 加热过程不是瞬间就能完成的。温度增加的速度随许多因素变化。由图中的曲线可知食品加热和冷却过程。
- median lethal concentration ( LD50 ) 半致死浓度
- median lethal concentration (LC50) LC50
- Overall, an organism's limit to distribution is determined not by lethal temperatures, but by conditions that make it a poor competitor. 总的说来，一个有机体的分布界限不是由致死温度所决定，而是由造成竞争强弱条件所决定。
- median lethal concentration(LC50) 半致死浓度（LC50）
- upper incipient lethal temperature 高起始致死温度
- A small adjustment will equalize the temperature in the two rooms. 稍作些调节就会使两间房内的温度相等。
