Roots high vacuum pump
... Roots blower pump ==> 罗茨增压泵 Roots high vacuum pump ==> 罗茨高真空泵 roots of large plant ==> 高大植物的根系 ...
基于12个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
由于罗茨泵是一种无内压缩的真空泵，通常压缩比很低，故高、中真空泵需要前级泵。
As the Roots pump is a non-vacuum inside the compression, the compression ratio is usually very low, so high, medium and vacuum pumps need to pump before.
youdao
应用推荐
模块上移
模块下移
不移动