如：真空冶炼，电力电容器，变压器，真空浸渍处理，真空镀膜设备中的预抽等。

For example, vacuum metallurgy, power condensers, transtormers, vacuum macerate process, fore-sucking for vacuum coating equipment, etc.

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采用真空硬脂酸锌浸渍封孔及超声波清洗前处理，对铁基粉末冶金件连续化学镀镍。

The electroless Ni plating on Fe-based powder metallurgy articles was continuously carried out with pretreatments of pore sealing by immersing in zinc stearate in vacuum and ultrasonic cleaning.

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