名词
中文翻译：相对衰减
同义词：
['relative decrease', 'relative diminution']
例句：
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1. The relative attenuation of the signal over distance is a significant factor in communication systems.
信号在距离上的相对衰减是通信系统中的一个重要因素。
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2. The relative attenuation of light through a prism can be used to determine its refractive index.
通过棱镜的光的相对衰减可以用来确定其折射率。
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3. The relative attenuation of the signal at different frequencies is a key factor in determining the system's performance.
不同频率的信号的相对衰减是决定系统性能的关键因素。