Once a biological control agent is released, it is difficult to control its speed.
一旦实施了生物控制手段，它的速度就很难控制。
Biological control has been used in many parts of the world.
生物防治曾经在世界许多地方使用。
This chapter is spent on three classic case of successful biological control.
本章着重于生物防治的三个成功的经典例子。
Chitinase and glucanase are very important in plant disease biological control.
几丁质酶和葡聚糖酶在植物病害生物防治作用中具有重要的作用。
It is an effective method of biological control to use insect virus to prevent pest.
利用昆虫病毒防治害虫是生物防治的一种有效方法。
Natural enemies, especially species of Torymidae, are considered as efficient biological control agents.
它有许多天敌，尤其是长尾小蜂，被认为是有效的生物防治手段。
While we cannot control our chronological age, we do have control over our biological age.
虽然我们无法控制我们的实际年龄，我们确实有控制我们的生理年龄。
We introduce how to apply PLC in control system of the biological cultivation room.
介绍了P LC如何应用于生物培育房控制系统。
It is very important for temperature control during biological heat transfer or laser process.
这对于生物质传热和激光加工过程中温度的控制有重要意义。
The control class USES the traditional teaching strategy to carry on biological teaching with study.
控制班采用传统教学策略进行生物的教与学。
The gelatin group had less biological lesions than the control group.
白明胶组的某些生化损伤较对照组为轻。
The gelatin group had less biological lesions than the control group.
白明胶组的某些生化损伤较对照组为轻。
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