If the aphids burst to a large number, the glisten membrane had a limited effect to drive aphids away, and the relative control effect would decline.

如果是烟蚜大发生或者是爆发，有翅蚜数量特别大，则反光膜对有翅蚜虫的驱避作用就会受到限制，相对防治效果就降低。

youdao

Objective: To study the effect of moxibustion in relative cell cycle control gene change of HCC precancerous lesion on big rats.

目的：研究艾灸对HCC癌前病变大鼠细胞周期调控相关基因的影响。

youdao

Through system dynamic simulation, a result of stable running status and all right control effect is obtained. The relative error of NSP temperature is below 1.4%.

系统仿真运行试验表明，控制器运行稳定，分解炉温度相对误差低于1.4%，控制效果良好。

youdao

To date, no drug has been approved in its leaf form because plants contain a complex composition of compounds with uncertain pharmacologies, metabolisms, side-effect profiles, toxicologies, drug interactions, and no control of relative concentrations.

ECONOMIST: Egypt's challenge