Due to the higher speed requirements and changes in environmental concerns, demands for lowered ball screwnoise are on an increase.
由于适应高速和环境的要求，对于丝杠噪音的关注在不断提高。
2
At the same time, because of double screw compressor stress is bad, bearing load, its mechanical noise than single screw compressor.
同时，由于双螺杆压缩机受力不好，轴承受力大，其机械噪声也要比单螺杆压缩机要大。
3
Therefore, double screw compressor and worm compressor compared, in the same speed of the units inside less number of exhaust air ripple, big air flow noise.