室内噪声来源于室外噪声辐射和室内声源。
Indoor noise comes from the emission of outdoor noise and indoor sources of noise.
而室外噪声以交通噪声为主，其中摩托车噪声是学生最不愿意听到的。
While the exterior noise is mainly from the traffic, of which motorcycle noise is the most antipathic noise to students.
采用试验研究的方法，研究了某型空调器室外机组防护网对气动噪声的影响。
The effect of protecting mesh of air conditioner outdoor unit on aerodynamic noise is studied with experimental method.
采用实验研究的方法，首次研究了某型空调器室外机组防护网对气动噪声的影响。
The effect of protecting mesh of air conditioner outdoor unit on aero-acoustic noise is studied with experimental method.
人们需要通过窗户获得阳光和新鲜空气，观赏室外景色，还要求它起到保温、隔热、遮阳、抗风雨、阻挡噪声等作用。
People need to get through the window sunshine and fresh air, and enjoy outdoor scenery, also isolate noise and preserve heat. The subsistence environment of human being is falling into dire straits.
分析了国内某大型铝厂焙烧炉用特大型室外鼓风机组的噪声现状，制定了相应的噪声控制方案。
The noise properties of a very large type of outdoor air blower unit in a very big manufacturing aluminum factory are analyzed, so schemes of control for the noise are worked out.
通过计算分析和试验验证，表明空调器室外机导流罩的宽度存在一个最佳值使室外机的噪声最小。
The results of computation and experiment show that an optimal width of the deflecting ring exists to make the noise generated by the outdoor set minimum.
通过计算分析和试验验证，表明空调器室外机导流罩的宽度存在一个最佳值使室外机的噪声最小。
The results of computation and experiment show that an optimal width of the deflecting ring exists to make the noise generated by the outdoor set minimum.
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