... 单级真空泵,Single stage vacuum pu... 双级真空泵,Double stage vacuum pump 双级真空泵,Double stage vacuum pu...
基于2个网页-相关网页
double-stage water ring vacuum pump 双级水环真空泵
double-stage positive displacement vacuum pump 双级结构容积式真空泵
double stage vacuum pump
双级真空泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The utility model provides a double-stage slide valve vacuum pump, which consists of an air pipe and two slide valve cylinders.
一种双级滑阀真空泵，由气路管道和二级滑阀缸组成。
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