杀虫剂的

Avermectins is one of highly potent anthelmintic and insecticidal agents discovered so far. The key to enhance avermectins production lies in screening of high-producing mutant and optimizing of culture conditions.

作为目前发现是为有效的杀虫剂之一的阿维菌素，其生产水平的提高关键在于阿维菌素高产突变株的获得以及发酵工艺的优化。

A method of killing flying insects which method comprises spraying into the air in which insects are flying liquid droplets of an insecticidal composition, a unipolar charge being imparted to the said liquid droplets by double layer charging and charge separation during spraying, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least +/-1x10-4 C/kg.

一种杀死飞虫的方法，该方法包括：向具有飞虫的空气中喷射杀虫剂组合物液滴，在喷射过程中通过双层充电以及电荷分离而向所述液滴施加单一极性的电荷，单一极性的电荷处于使所述液滴具有至少＋／－1×10-4C/kg的电荷／质量比的水平。

That is the conclusion of two just-released studies of communities surrounding the defunct Union Carbide pesticide factory.

这个结论是由一个已倒闭的碳化物杀虫剂工厂附近的小区做的2个刚发表的研究当中得出的。

Meanwhile, the author also described some controls on A. albopictus such as chemical controls using pesticides, repellents, and attractants; bio-controls using algae and Gambusia affinls, and the environmental management of these controls.

同时，本文还阐述了白纹伊蚊的一些控制方法，如利用杀虫剂、驱避剂、引诱剂等的化学防治法；利用水藻、食蚊鱼等的生物防治法的优缺点，以及白纹伊蚊的环境治理。

The half-life day of HCH, DDT and chlorpyrifos was 27～32, 27～33 and 22～24 respectively and the residue were detected in the substrates and fruitbodies when fungi were inoculated to the substrated, There were no cypermethrin detected in the fruitbodies, and it's half-life day in the substrate was 19～20. Carbendazim used for control germina was also detected in the substrates and fruitbodies with a half-life from 19 days to 20 days. Because of it's short half-life (2 days to 4 days), the degradation of Chlorothalonil in substrates and fruitbodie were quickly and no chlorothanonil were detected both in the substrates and fruitbodies when harves.

在接菌情况下，HCH、DDT和毒死蜱等杀虫剂在食用菌子实体和培养料中都有残留，培养料中的降解半衰期分别为27～32天、27～33天和22～24天；氯氰菊酯在培养料中的降解半衰期为19～20天，但在子实体中没有残留；多菌灵是防治食用菌病害的常用杀菌剂，在培养料和子实体中也都有残留，并且培养料中的降解半衰期为19～20天；百菌清极易降解，在培养料和子实体都没有残留，在培养料中的降解半衰期仅为2～4天。

Bt cotton and corn may affect natural enemies indirectly by decreasing the population of lepidopteran insects that serve as hosts of parasitoids or predators. Population densities of predators in Bt fields were significantly higher than those in non-Bt fields treated with insecticides for control of target pests.

杀虫剂用量的减少，降低了对天敌的杀伤力，Bt田中捕食性天敌的种类和数量均显著高于常规施药田；但Bt田内靶标害虫数量的减少和质量的降低，在一定程度上影响了寄生性天敌的种类和数量。

Among these, the most prevalent was endosulfan-diol, with an average concentration of 4.15 nanograms per gram of placenta.

在这些中最普遍的是二醇硫丹，它的平均浓度为每克胎盘组织中富集4.15毫微克，令人惊讶的是，668例孕妇样本中，一些患者的胎盘中甚至含有15～17 种杀虫剂。

Objective The toxicity and synergism of several commonly used insecticide mixtures,and DDVP mixed with synergists,to the larvae of DDVP-resistant Culex pipiens pallens were detected to delay the development of mosquito resistance to insecticides.

目的 为延缓抗性的发展，测定了淡色库蚊幼虫DDVP抗性品系对常用的几种杀虫剂混用后的敏感性及与增效剂氯化胡椒基丁醚(S1)、八氯二丙醚(S2)和增效胺混用的效果。

So if you're allergic to dust, insecticides, pollen, cigarette smoke, and cat dander, you'll need to reduce the overall allergen level in your environment by concentrating on all of the causes, not just the pet allergy.

因此，如果您对灰尘、杀虫剂、花粉、香菸的烟或猫的毛屑过敏，就必须就所有的原因减少环境中整体的过敏源程度，而不是只针对宠物。

According to Gilson Consega of the Brazilian Agricultural Ministry's phytosanitary department, China, Brazil's main soy export destination, discovered excess humidity, earth and unacceptable traces of insecticide in one soybean shipment and, more worryingly for Brazil, found evidence of the aflatoxin bacteria, which can cause cancer, in another cargo.

巴西农业部植物病理司的吉尔森·康赛加说，作为巴西大豆主要出口对象的中国在一批出口大豆中发现有过多水份、泥土及超量杀虫剂，更令巴西担心的是，在另一批货中还发现有致癌性黄曲霉毒菌的证据。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。