除虫菊杀虫剂

Some organic insecticides are natural, such as rotenone, pyrethrins, and nicotine. Others are synthetic, such as chlorinated hydrocarbons (e.g., DDT, dieldrin, lindane); carbamates, related to urea (e.g., carbaryl, carbofuran); and parathions, organic phosphorus ester s.

有机的杀虫剂可能是天然的，如鱼藤酮、除虫菊和尼古丁；或是合成的，如氯代烃类(例如，滴滴涕、狄氏剂、林丹)、氨基甲酸酯，与尿素有关(如氨基甲醯、灭多虫和卡甲喃)、巴拉松、有机磷酸盐。

Some organic insecticides are natural, such as rotenone, pyrethrins, and nicotine. Others are synthetic, such as chlorinated hydrocarbon s (e.g., DDT, dieldrin, lindane); carbamates, related to urea (e.g., carbaryl, carbofuran); and parathions, organic phosphorus esters.

有机的杀虫剂可能是天然的，如鱼藤酮、除虫菊和尼古丁；或是合成的，如氯代烃类(例如，滴滴涕、狄氏剂、林丹)、氨基甲酸酯，与尿素有关(如氨基甲醯、灭多虫和卡甲喃)、巴拉松、有机磷酸盐。

Some organic insecticides are natural, such as rotenone, pyrethrins, and nicotine. Others are synthetic, such as chlorinated hydrocarbons (e.g., DDT, dieldrin, lindane); carbamates, related to urea (e.g., carbaryl, carbofuran); and parathions, organic phosphorus esters.

有机的杀虫剂可能是天然的，如鱼藤酮、除虫菊和尼古丁；或是合成的，如氯代烃类(例如，滴滴涕、狄氏剂、林丹)、氨基甲酸酯，与尿素有关(如氨基甲醯、灭多虫和卡甲喃)、巴拉松、有机磷酸盐。

A simple, rapid and reproducible multiresidue analytical method for the determination of pyre-throids at low nanogram levels in vegetable and fruit is described.

引 言拟除虫菊酯是一类重要的合成杀虫剂，具有高效、广谱、低毒和生物降解等特性，主要用于防治棉花、蔬菜和果树的食叶和食果害虫。

Pbo significantly synergizes fenvalerate、cypermethrin and methomyl against Xihua field resistant strain ofHelicoverpe armigera , TPP can somewhat synergize pyrethroids also.

对西华田间棉铃虫抗性种群，Pbo能显著地增加氰戊菊酯、氯氰菊酯、灭多威的毒力，大幅度地降低其致死中量，TPP对两种拟除虫菊酯杀虫剂也表现一定的增效作用；对甲基对硫磷、甲胺磷，无论是Pbo还是TPP其增效作用均十分有限。

This article discusses the structure of pyrethroid insecticides development process, mechanism, the use of methods and research directions.

科技论文摘要急求翻译！！！本文主要论述了拟除虫菊酯杀虫剂的结构开发历程，作用机制，使用方法及研究的方向。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐