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There is a kind of rough wall surface, which is said to be sound-absorbing.
有一种墙面是麻的，据说可以吸音。
《新英汉大辞典》
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This method is useful to surface wave absorbing material study.
该测量方法特别适用于表面波吸波材料的研究。
youdao
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This method is useful to surface wave absorbing material study.
该测量方法特别适用于表面波吸波材料的研究。
youdao