He thought mine was noise, I thought his was weird.
他认为我听的是噪音，我却认为他听的很怪异。
Noise hazard of coal mine operation is serious, and needs comprehensive control.
目的了解煤矿井下作业噪声危害现状，探讨防治对策。
The noise of fan outlet is a chief noise source in the coal mine.
对于煤矿噪声分析，主要噪声源是风机出口噪声。
The noise of fan outlet is a chief noise source in the coal mine.
对于煤矿噪声分析，主要噪声源是风机出口噪声。
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