一种杀虫剂

Hexachlorocyclohexane is a broad spectrum insecticide still used in some of the developing countries, though developed countries have banned or curtailed its use.

六六六是一种广普的杀虫剂，尽管发达国家已经禁止或限制，却一直在发展中国家应用。

Hexachlorocyclohexane is an organochlorine insecticide,it has been listed recalcitrant worldwide pollutant due to its toxicity, environmental persistence.

六六六（γ-Hexachlorocyclohexane，γ-HCH）是一种有机氯杀虫剂，由于它具有持久性和很高的毒性，成为顽固性的世界性污染物。

A salt or ester of hypochlorous acid.

乙硫磷一种剧毒的液态有机磷酸酯杀虫剂，分子式为

Due to the bad crystal habit and crystal size distribution of the product from the domestic factory and the higher content of impurities, the quality of copper sulfate pentahydrate has been affected by these factors.

五水硫酸铜是一种重要的无机化工产品，广泛应用于化学工业和电镀工业中，同时也作为动物饲料矿物添加剂和杀虫剂广泛的运用于农业。

As a new type biological pesticide, metarhizium anisopliae （ L8500） causes no pollution, is environmentally compatible, has a low cost, clear pesticidal effects, and good economic, social and biological benefits and good prospects for promotion and application.

绿僵菌（ L8500）作为一种新型生物杀虫剂，无污染，环境相容性好，成本低，杀虫效果明显，具有良好的经济、社会、生态效益和推广应用前景。

Diamondback moth,Plutella xylostella L.,a cosmopolitan pest of crucifers ,had shown resistance to more than 50 insecticides which had brought large difficulties in chemical control of pests.

小菜蛾是一种世界性十字花科蔬菜害虫，目前已对生产上常用的杀虫剂产生了不同程度的抗药性，给药剂防治带来很大的困难。

Validamycins have been one of the most popular and economical biopesticides in China, by microbial transformation of which validoxylamine A and valienamine can be produced. Validoxylamine A has strong inhibition on trehalase and it is a new promising insecticide. Valienamine demonstrates strong glucosidase inhibitory activity, which can also be used as intermediate in the synthesis of medicines for diabetes.

井冈霉素目前已成为我国最经济最受欢迎的生物农药之一，用微生物转化法分解井冈霉素可以得到井冈霉亚基胺A和井冈胺，前者对海藻糖酶有强烈的抑制作用，有望开发成为新型生物杀虫剂，而后者是一种糖苷酶抑制剂，也可作为合成降糖药的原料。

This work is one of the most important bases of eliminating locusts. Studying the oogenesis of insects has important significance on demonstrating the reproductive mechanism and controlling locusts" fertility. At the same time, it"s an important means of studying the forecast of pests and the law of occurrence. It can reveal the law of ovipositing and explain the physiological basis of pests" occurrence, thus design "biorational insecticide.

研究昆虫的卵子发生对于阐明昆虫的生殖机理和控制繁殖具有重要的实践意义，是研究害虫预测预报和发生规律的一种重要手段，同时可以揭示昆虫大量产卵的规律，阐明害虫大发生的生理基础，从而设计出&生物合理的杀虫剂&，并为促进有益昆虫的大量繁殖提供理论依据。

Its chief use is now as a raw material for resins, insecticide s, oil additives, and synthetic pine oil and camphor and as a solvent.

松脂现主要被用来生产树脂、杀虫剂、油彩添加剂、合成松节油和樟脑，也被用作一种溶剂。

Its chief use is now as a raw material for resins, insecticides, oil additives, and synthetic pine oil and camphor and as a solvent.

松脂现主要被用来生产树脂、杀虫剂、油彩添加剂、合成松节油和樟脑，也被用作一种溶剂。

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。