随着生育进程的推进，绿叶面积衰减量也呈增加的趋势。
With the growth process moving forward, green leaf area decrement had the increasing tendency.
实验表明可用脉冲电场的峰值衰减量来评估屏蔽体的脉冲电场屏蔽效能。
Experimental results show that the attenuation of the maximum electric field value can reflect pulse electric field shielding effectiveness.
并根据声学原理计算了该声屏障绕射衰减量，提出了切实可行的补救措施。
The attenuation amount of diffraction of this sound barrie is calculated according to the acoustics principle, the feasible remedies are put forward.
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