1) dry-sealed vacuum pump
干封真空泵
2) dry vacuum air pump
干真空泵
3) liquid-sealed vacuum pump
液封真空泵
4) oil-sealed vacuum pump
油封真空泵
5) Dry vacuum pump
干式真空泵
1.
Volumetric efficiency of a new claw type dry vacuum pump was introduced.
介绍了一种新型的特殊爪型干式真空泵的容积利用系数。
2.
In this paper, the pumping principle, definition,performance of dry vacuum pump and its applications are described .
本文介绍了干式真空泵的抽气原理、定义和特点及其应用 ,最后简述了干式泵抽除颗粒物质的措施和方法。
6) oil-sealed rotary pump
油封机械真空泵
补充资料：干封
1.晒干新筑的祭坛。封，封禅时所建的祭坛。后泛指天旱。《史记·孝武本纪》:"夏﹐旱。公孙卿曰:'黄帝时﹐封则天旱﹐干封三年。'上乃下诏曰:'天旱﹐意干封乎?其令天下尊祠灵星焉。'"张守节正义:"苏林曰:'天旱欲使封土干燥也。'颜师古曰:'三岁不雨﹐暴所封之士令干。'"《汉书·沟洫志》:"上既封禅﹐巡祭山川﹐其明年﹐干封少雨。"唐鲍溶《闻国家将行封禅聊抒臣情》诗:"云雨由来随六龙﹐玉泥瑶检不干封。"一说﹐祭祀而不立神主谓"干封"。见《史记·孝武本纪》裴骃集解引如淳说。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条