为了造成真空的环境来为生产服務,人们曾做了大量的試驗研究工作,制成获得低真空、高真空以及超高真空的各种工具——抽气机、真空泵。能获得低真空的常用的泵是机械泵。机械泵又称旋轉泵。 In order to create a vacuum environment for the production of services, people have done a lot of experimental research, made to obtain a variety of low vacuum, high vacuum and ultra-high vacuum tools - suction, vacuum pumps. A common pump that can achieve a low vacuum is a mechanical pump. Mechanical pumps, also known as rotary pumps.