可击倒的

The common-toxicity coefficient of mixed medicament is 125.64, mixed of Matrine and avermectin could expedite struck down pesticide and their medicamental avail represented additive effect.

在测定药剂混用的共毒系数试验中，测得共毒系数为125.64，苦参碱与齐螨素混配，可加快试虫击倒速度，两者药效表现为相加作用。

Dichlorvos was once a good product and widely used for its outstanding effect on knocking down insects and easy volatilizing. But DDVP and chlorpyrifos are limited to use for the reason of safety. According to the recommendation of WHO, a new miticide,pirimiphos-methyl, was developed by Hunan chemical academy in 1999. It can be used for controlling mosquitoes, flies, cockroaches and mites et al.

有机磷杀虫剂中的敌敌畏由于具有击倒作用与杀灭能力较强，又有自然挥发功能，所以，是应用最广的品种，但DDVP在卫生杀虫剂中已处于限制使用状态。1999年，湖南化工研究院，根据WHO的推荐，研制开发了广谱，速效杀虫，杀螨剂—甲基嘧啶磷，可用于防制蚊，蝇，蟑螂和螨等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。