The hydraulic power unit is a very important part of industrial hydraulic system, and also an important noise source.
液压站是工业液压系统的重要组成部分，也是噪音的重要来源。
A lot Ball mill produced a strong noise in operation, which is the main source of industrial noise, impact on people's physical and mental health badly.
大量的球磨机在运转时产生强烈的噪声，严重影响人们的身心健康，是主要的工业噪声源之一。
A lot Ball mill produced a strong noise in operation, which is the main source of industrial noise, impact on people's physical and mental health badly.
大量的球磨机在运转时产生强烈的噪声，严重影响人们的身心健康，是主要的工业噪声源之一。
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