Screw compressor because of small size, light weight, easy maintenance wait for a characteristic and petrochemical enterprise which favour.
螺杆式压缩机由于尺寸小、重量轻、易维护等特点而备受石化企业青睐。
3
The main shaft between the air compressor and the gas turbine in a jet aircraft engine is hollow to permit an internal speed reduction shaft with the minimum requirement of space and weight.