油封式旋片真空泵是真空技术中最基本的真空获得设备之一，应用面广而量大。
The oil sealed sliding vane vacuum pump is one of basic vacuum production equipments, wide application and more requirement.
油封式旋片真空泵是真空技术中最基本的真空获得设备之一，应用面广而量大。
The oil sealed sliding vane vacuum pump is one of basic vacuum production equipments, wide application and more requirement.
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