THE INFRARED ABSORPTION SPECTRUM OF ZINC OXIDE WHISKERS WITH TETRAPOD SHAPE WAS RECORDED AND COMPARED WITH ZNO POWDER. T......

采用消声，吸声，隔声和隔振等多项措施对锅炉房鼓风机的噪声进行治理，降噪效果明显，取得了较好的综合效益。......

There is increase in the issues related to noise pollution due to their negative impacts on the individual.The ability o......

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