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.
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。
The sound reduction hood is mainly used in gas turbine, steam turbine, air separation plant, air compressor, generator set and other large-scale equipment for noise control.
主要用于燃气轮机、蒸汽透平机、空分设备、空压设备、发电机组等大型设备的噪声治理。
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