名词
中文翻译：回声衰减
同义词：
['echo reduction', 'echo attenuation']
例句：
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1.The sound of the waves hitting the shore is a good example of echo attenuation.
海浪拍打岸边的声音很好地展示了回声衰减。
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2. In military communications, echo attenuation is used to improve signal reliability.
在军事通信中，回声衰减被用来提高信号的可靠性。
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3. The use of echo attenuation in radar systems helps to reduce false targets.
雷达系统中使用回声衰减有助于减少虚假目标。