常见例句

雙語例句

Slide-valve vacuum pump is a usual mechanical oil seal vacuum pump.
滑閥真空泵是一種常見的油封式機械真空泵。
The utility model provides a double-stage slide valve vacuum pump, which consists of an air pipe and two slide valve cylinders.
一種雙級滑閥真空泵，由氣路琯道和二級滑閥缸組成。
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It is a positive displacement vacuum pump, which can pump gas by rotating slide valve to change cubage of gas- absorbing cavity.
它是通過滑閥轉子作機械鏇轉運動從而改變吸氣腔容積以達到抽氣目的的容積式真空泵。