杀虫剂的

And the compared efficacy test was executed between extract of pyrethrum and other several normal synthetic insecticide.

中提取天然除虫菊提取物，与常用的几种化学合成杀虫剂对比，进行药效试验。

An insecticide derived from a plant, e.g. pyrethrum.

3来源于植物的杀虫剂，例如除虫菊。

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

The rsistance of house flys were relative to the using frequency and dose of insecticides.

家蝇抗药性水平的高低，与化学杀虫剂用量大小和使用频率高低密切相关。

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。

If you are fortunate enough to have well-drained soil, you would not have to worry about spraying.

如果你很幸运地住在排水良好的干燥土地周围，那么你就不需为喷洒杀虫剂担心了。

In the modem era, the general measures to control thisdisease is using stibine sodium gluconate for treatment of patients or catching andkilling the infected dogs to control infective agent; the second is killing sandfly tobreak the rout of transmission.

目前，对内脏利什曼病采取的主要控制措施仍然是使用葡萄糖酸锑钠等药物治疗病人或捕杀病犬以控制传染源，其次是使用驱虫剂或杀虫剂避免被传播媒介白蛉叮咬。

Chinese people repelled mosquitoes by burning tansy and composite family plants 1000 years ago. This might be the earliest hygienic insecticides application.

中国人早在1000多年前就用燃烧艾蒿，菊科类植物来驱赶蚊虫，这是我国较早使用的卫生杀虫剂。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。