如果噪声源和抗噪波无法重合，合成波形就不能恰好重叠，抗噪效应也就无从谈起。
Unless the sources of the noise and the antinoise coincide, the wave patterns will not overlap properly and the effect will be lost.
分子量降低和消旋作用对温度的依赖性，是由于分子运动和笼罩效应以及重合的空间位阻效应所致。
The dependence of chain scission and racemization on temperature results from molecular motion, "cage effect" and steric hindrance during recombination.
本文研究了三种不同空间立构聚甲基丙烯酸甲酯的辐射效应，提出裂解过程是一种裂解与重合的动态平衡过程。
The radiation effect on poly (methyl methacrylate) with different tacticities was studied. It was proposed that chain scission process was in a kinetic equilibrium between scission and recombination.
本文研究了三种不同空间立构聚甲基丙烯酸甲酯的辐射效应，提出裂解过程是一种裂解与重合的动态平衡过程。
The radiation effect on poly (methyl methacrylate) with different tacticities was studied. It was proposed that chain scission process was in a kinetic equilibrium between scission and recombination.
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