insecticides的例句大全

Methods: We measure the LD of flies on insecticides standard drop way.

方法: 采用点滴法测定家蝇对杀虫剂的半数致死量.

Plants provide many chemicals that can be useful to humans, especially for drugs and insecticides.

植物能为人类提供有用的化学物质, 特别是药物和杀虫剂.

The control of cucurbit wilt has been based on chemical insecticides applied for beetle control.

防治葫芦科植物萎蔫病,至今仍依靠使用化学药剂防治甲虫.

Both Aldrin and Chlordane are valuable insecticides.

艾氏剂和氯丹都是重要的杀虫剂.

Confine the use of insecticides to the evening and do not spray plants that are in flower.

只在晚间使用杀虫剂，而且不要对正在开花的植物喷药。

A group of insecticides called chlorinated hydrocarbons illustrate this effect.

一大批称为氯化烃的杀虫剂阐明了这种放大作用.

Resistance to insecticides has been apparent for many decades.

杀虫剂抗药性的出现已有数十年.

Spraying with insecticides and fungicides may be necessary to control any insects and diseases.

也许有必要喷洒杀虫剂和杀菌剂以防止病虫害.

In remote regions, the air is pure and the crops are free of poisonous insecticides.

在偏远地区，空气很纯净，庄稼也不施用有毒的杀虫剂。

Systemic insecticides have shown particular promise.

内吸杀虫剂看来特别有效.

Farm workers frequently come in contact with these insecticides.

农场工人常常接触这些杀虫剂.

They are insects'worst enemies, killing far more pests than commercial insecticides do.

它们是昆虫的死敌, 杀灭害虫的能力要比作为商品的杀虫剂大得多.

I have decided to specialize in plant chemicals that can be used for insecticides.

我已经下决心专门研究可以用作杀虫剂的植物中的化学物质.

Insecticides are widely used for controlling most insect pests.

杀虫剂广泛应用于防治大多数害虫.

It is not my contention that chemical insecticides must never be used.

我不是说人类决不能使用化学杀虫剂.

In some cases, insecticides are deliberately misused.

在一些情况中, 杀虫剂被故意不当地使用.

Effect of organophosphorous insecticides on Chinese chive insect pests and their degradation by pesticide-degrading bacterium

有机磷农药对韭菜虫害的防治效果及农药的微生物降解

Studies on the Control of Chinese Chive Maggot by Some Insecticides and the Insecticidal Action on the Pest

无公害杀虫剂防治韭蛆的药效试验及苦参碱杀虫作用的研究

Determination of Halogenated Hydrocarbons in Adhesives by Gas Chromatography Coupled with Electron Capture Detector DETERMINATION OF SYNTHETIC PYRETHROID INSECTICIDES IN BIOLOGICAL MATERIALS BY GC/ ECD

气相色谱/电子捕获检测器法对胶粘剂中卤代烃的测定

In insects, a substantial amount of research has indicated that cytochrome P450 enzyme system plays pretty important roles in detoxifying metabolism of pyrethroid insecticides and plant toxins.

在昆虫中，已有大量研究表明细胞色素P450酶系对菊酯类杀虫剂以及植物毒素的解毒代谢方面起着非常重要的作用。