购买设备时，确保建造的设备在噪声控制之内。如，便携式发电器应有罩子以降低对周围区域产生的噪声影响。
When purchasing equipment, ensure the equipment has built in noise control. For example, portable generator should have proper covers to reduce noise disturbance to the surrounding area.
在噪声控制中用于室内吸声降噪以及通风空调系统和动力设备排气管中的管道消声等。
In the noise control, it can be used in sound absorption and noise reduction in the room.
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