mechanical water ring vacuum pump的意思|示意

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机械水环真空泵

mechanical vacuum pump oil 机械真空泵油
to mechanical vacuum pump 到机械真空泵
mechanical l system of units 机械单位制
C-mechanical nociceptive units 机械痛觉单元
mechanical receptive units 机械感受单位
mechanical transport depot vacuum pump 机械输送库真空泵
Mechanical valve lifter 机械式汽门举杆
mechanical valve prosthesis 机械瓣膜
mechanical valve replace we are pirates, these data are stolen from youdao 我们是盗版者，这些数据是从有道偷来的
externally positioned mechanical valve 外置式机械阀