With the development of industry , sometimes we need compressed gas without polluted by lube ( or not by a long sight allow gas to contract with lube ), but now most kinds of scroll compressor are still lubricated by oil .
随着工业的发展,常要求气体在压缩时不被润滑油所污染,而目前大多数涡旋压缩机采用有油润滑。