查询词典 lethal dose

The character of hemagglutination of the virus could be inhibited by the antiserum of Newcastle disease virus.According to the international standard and method of virulence judgement of NDV, we measured the average death time、the minimal lethal dose and the median infective dose(EID50) of chicken embryos and the intracellular inoculation pathopoiesis index of 1-day-old chicks.

参照国际上规定的新城疫病毒毒力判定标准及其方法对分离毒株ZH1、ZH2进行了鸡胚最小致死量和平均死亡时间、鸡胚半数感染量(EID50)以及1日龄鸡脑内接种致病指数测定，结果ZH1、ZH2株的MDT为52h和44 h，EID50为106.4/ 0.1mL和108.64/ 0.1mL，ICPI为1.93和1.975。

Based on the data of seeding rate and root growth,it is concluded that the semi-lethal radiation dose of Platanus acerifolia Willd.dry seed was 50Gy,and the suitable dose range for radiation breeding was 50 to 250Gy.

通过对悬铃木辐射组与对照组成苗率和根长进行比较，初步推测悬铃木辐射的半致死剂量为50Gy，辐照诱变的适宜剂量为50至250Gy。

Results:weijian obviously shortened the latent period of erection in castrational rats after electric stimulus and the latent period of coitus in castrational mice,increased coitus times in castrational mice,increased the appearance rate of sperm suppository in copulated female mice. the acute toxicity tests showed that the half lethal dose(ld50) of weijian was 901.53 mg/kg and 319.60 mg/kg, the long-term toxicity tests showed that large dose of weijian slightly increased the level of glutamic pyruvic transaminase and decreased the glucose,triglyceride and cholesterol of blood, while had no effects on other biochemical factors.

结果： 伟剑能明显缩短去睾丸大鼠的电刺激阴茎勃起潜伏期，明显缩短去睾丸小鼠的性交潜伏期，并增加去睾丸小鼠的性交次数，增加交配后雌性小鼠的精栓出现率；急性毒性试验测得伟剑的口服半数致死量（ld50）为901.53 mg/kg，腹腔注射的ld50为319.60 mg/kg；长期毒性试验研究表明该药在大剂量时可轻度升高谷丙转氨酶，轻度降低血糖、总胆红素及胆固醇，而对其他血液生化指标无影响。

The results show that the Albizzia julibrissin Durazz had a stronger alkaline tolerance, the lethal and half lethal concentrations of alkaline to Albizzia julibrissin Durazz were 147.33 mmolL^(-1), 78.30 mmlL^(-1), respectively.

结果表明，合欢树种的耐碱能力较强，半致死浓度为78.30 mmolL^(-1)，致死浓度为147.33 mmolL^(-1)。

The airborne dispenser is a family of Multi-Purpose air-to-surface precision-attack modularized glide bomb. Its payload bay can accommodate lethal and non-lethal payloads - from warheads to pamphlets to sensor packages.

机载布撒器是一种能在敌防空火力区域之外投放、能携带多种子弹药、高精度、模块化的滑翔式多用途航空制导攻击武器。

The most suitable range of temperature is 25~30℃ and lethal temperature is 56℃ for hypha growth, the most suitable temperature is 25℃ for produce more conidiospore and lethal temperature is 56℃ for conidiospore. Within the pH range of 3~11 the hypha could grow and produce conidiospore. The optimum pH is 5~7 for hypha growth and 3, 9, 10 for produce more conidiospore. The range of glucose concentration is 2%~8% for hypha growth, the most suitable glucose concentration is 2% for hypha growth and produce more conidiospore. The effect of illumination on Bipolaris cynodontis was significance to the growth hypha and spore numbers. The whole light is advantage of hypha growth, but could not produce conidiospore. Alternation of light and darkness for 12 hours is advantage of hypha growth, as well as produce conidiospore.

菌丝最佳生长温度是25~30℃之间，在25℃时最利于产孢，菌丝生长和分生孢子的致死温度是56℃；该菌在pH 3~11范围内均能生长，产生分生孢子，菌丝生长的最适pH 5~7，产孢量最大的pH是3，9，10；糖浓度在2%~8%菌丝能生长，在糖浓度为2%时菌丝生长最好，产孢量最高；光照对病原菌的菌丝生长和产孢有明显影响，在全光照的条件下有利于菌丝的生长，但不会产孢，黑暗12h光照12h既利于菌丝生长又利于产孢，而全黑暗的条件下不利于菌丝生长和产孢。

"We are looking for a last line of defense and that defense has to be lethal to counter lethal intent," said Gregg Overman, spokesman for the Allied Pilots Union representing 13,500 American Airlines pilots.

由13，500名美国飞行员组成的飞行员联盟发言人格雷格·奥弗曼说：我们一直在寻找能够与致命的恐怖行为抵死抗争的最后防线。

The results showed that 2,4 D had promotive effects on the growth of pavlova viridis, especially in the early stage of culture, and the optimum mass concentration was 0.1 mg/L. 6 BA had lethal effect on pavlova viridis, and the lowest lethal mass concentration was 1.0 mg/ L.

结果表明，在试验浓度范围内，2 ，4— D对绿色巴夫藻生长的影响在培养早期比后期明显，最适浓度为 0 。1 m g/L ；6-BA质量浓度≥ 1 mg/L时对绿色巴夫藻有致死作用，质量浓度为 0 。1～ 0 。8mg/L时，对绿色巴夫藻的生长有促进作用，促进生长的最适质量浓度为 0 。5mg/L。

The results showed that while the raying distance was 10 cm and an ultraviolet lamp with 20 W acted on the strain of Norcardia corailina 3 min and 4 min, the lethal ratio was high than 90%; While the raying time was 5 min, the lethal ratio was 100%.

结果表明：在紫外灯功率为20w，照射距离为10cm的条件下，诱变时间为3min和4min，致死率均大于90％；而诱变时间为5min，致死率为100％。

The toxicity test showed that the aconitic steep had high effects of contact toxicity and lethal toxicity against Calospilos suspecta, with a contact toxicity LC50 of 6.1235mg/L and lethal toxicity LC50 of 22.4905mg/L, and without antifeedant activity and fumigant poison.

毒力测定结果表明，附子浸渍液对五龄期卫矛尺蠖具有较强的触杀作用和毒杀作用，触杀中浓度LC50为6.1235mg/L，毒杀中浓度LC50为22.4905mg/L，无拒食作用和熏蒸作用。

He tendered his resignation to the Prime Minister.

他向首相递了辞呈。不适合

International economy and trade,Nanking 210044

国际经济与贸易，南京 210044