一种杀虫剂

A bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood an bark of trees of the genera Quassia and Picrasma.

一种味苦的化合物，用作杀虫剂，从苦木属树木木材和树皮中提取。

A bitter compound used as an insecticide and tonic and vermifuge ; extracted from the wood an bark of trees of the genera Quassia and Picrasma.

一种味苦的化合物，用作杀虫剂，从苦木属树木木材和树皮中提

Early rotenone rotenone people from such plants are separated from the insecticidal activity of a substance, is one of three traditional plant-derived pesticides.

鱼藤酮是早期人们从鱼藤属等植物中提取分离出来的一种有杀虫活性物质，是三大传统植物性杀虫剂之一。

Melamine is also a metabolite of cyromazine, a triazine pesticide commonly used in vegetable and chicken farms.

三聚氰胺同时是环丙胺嗪（一种广泛应用于蔬菜和养鸡产业的三嗪类杀虫剂）的代谢产物。

Baculovirus is a kind of double-stranded circle large DNA virus, which has been developed as an environment sound pesticide and a powerful vector of foreign protein expression, as well as a potential vector of gene therapy.

杆状病毒是一类大型环状双链DNA病毒，作为一种高效的生物杀虫剂、真核表达系统以及基因治疗载体的研究和应用，其分子生物学和侵染机制的研究也取得了很大进展。

A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide and weed killer.

一种白色有毒的粉末状砷的三氧化物，用于制造玻璃，用作杀虫剂和除草剂。

Adlay is a grass crop which has been used in traditional Chinese medicine and also as a nourishing food. It has been shown to posses anti-allergic, antimutagenic and hypolipemic effects. BaP is a known environmental pollutant which causes oxidative stress, carcinogenic and mutagenic compound. TBT is widely used as antifouling paints, agriculture biocides, and plastic stabilizers around the world, resulting in great pollution problem in aquatic environments.

薏苡仁属於草本植物，已经被使用在中药方面且也是一种食物，具有抗过敏、抗突变及降血脂的能力；苯骈芘是已知会提升氧化压力具有致癌及致突变性的环境污染物；而三丁基锡是被广泛添加在抗海洋生物的油漆、农业的杀虫剂及塑胶稳定剂里的成分，其在近年对海洋水生环境造成了相当大的污染问题。

Its insecticidal active ingredients are sesquiterpenoid polyol esters with a dihydroagarofuran structure. These compounds are stable to light, heat, and pH, and exert a narcotic and toxic poisoning action. Celastrus angulatus contains a plant-origin insecticide with a unique mechanism of action. Celangulins, a 0.2% emulsifiable concentrate has already been developed for insect control.

是我国广泛分布的一种杀虫植物，其杀虫有效成分基本上均是以二氢沉香呋喃为骨架的多元酯类化合物，对光、热和pH值均稳定，对害虫主要表现为麻醉和毒杀作用，苦皮藤是一类作用机理独特的植物源杀虫剂，在其实际杀虫的应用上，已经开发出了0.2%苦皮藤素乳油。

An important commercial viral pesticide is marketed under the trade name Elcar for control of the cotton bollworm Heliothis zea.

一种重要商品病毒杀虫剂商品名为Elcar用于抑制棉铃虫。校准农药喷雾器的目的，是为了保证按所需的量予以喷洒。

An important commercial viral pesticide is marketed under the trade name Elcar for control of the cotton bollworm Heliothis zea.

一种重要商品病毒杀虫剂商品名为Elcar用于抑制棉铃虫。

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。