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排风扇消声减噪的最合理方法,就是选用低噪声排风扇,从声源上来降低噪声。然而我们在实际工程中,目前还很难选到合适可靠的低噪声系列排风扇。
The most reasonable method for noise reduction and noise reduction of the exhaust fan is to use a low noise exhaust fan to reduce the noise from the sound source. However, in practical projects, it is still very difficult to select a suitable and reliable low-noise series exhaust fan.