The advantage of biological control in contrast to other methods is that it provides a relatively low-cost, perpetual control system with a minimum of detrimental side-effects.
与其他方法相比,生物防治的优点是它提供了一种成本相对较低、有害副作用最小的永久性防治系统。
This guide described the relevant features of the AIXPCM and the SDDPCM path control modules in a compare and contrast fashion.
本指南以比较和对比的方式描述了 AIXPCM 和 SDDPCM 路径控制模块的相关特性。
By contrast, their same-aged peers from the control condition failed to move their hands.
相反,他们在对照组中同样年龄的同伴没有移动他们的手。
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