two-armed spider

The soluble powder: polythiocycloalkanes, has good effective on the control of pest insects such as two-spotted spider mite, cotton bollworm and citrus red spider mite ect.

简介了产品的毒性毒理概况和应用范围，尤其是防治棉红蜘蛛、棉铃虫、柑桔红蜘蛛等害虫的良好特性。

The results of simulation indicate that when car beeline or swerve run the differential can basically satisfaction the relation that sum of the palstances of the two spider gears is approximatively as twice as that of spider gears' shell.

仿真结果表明，该差速器在直线行驶和转弯行驶两种状态下，基本上都能满足两侧差速轮的角速度之和等于差速器壳角速度的两倍这一关系。

"The driving shaft causes the spider to rotate, and the other two trunnions of the spider cause the driven shaft to rotate."

主动轴使万向节十字轴转动，另外两个万向节十字头使从动轴转动。GB/T7550-1987球笼式同步万向联轴器试验方法

Description of two new species and the male spider of one species of Linyphiidae ( Arachnida: Araneae)

皿蛛科二新种及一种雄蛛的发现（蛛形纲：蜘蛛目）

A comparision of the locating responses of two phytoseiid mites ( Tetranychus cinnabarinus) to kairomone of red spider mite

二种植绥螨对朱砂叶螨利他素定位反应的比较