- 真空泵 zhēnkōngbèng vacuum pumpA device used to remove gas from a sealed container to create a vacuum; also called [[抽气机|抽氣機|chou1 qi4 ji1]].
- 真空管 zhēnkōngguǎn vacuum tubean electron tube from which most of the gas has been removed, containing electrodes used for rectifying, detecting, or amplifying electrical signals
- 三极真空管 sānjízhēnkōngguǎn triodean electronic vacuum tube with three electrodes
- 政权真空 zhèngquánzhēnkōng power vacuumpolitical vacuum or a period where there is no effective government control
- 真空包装 zhēnkōngbāozhuāng vacuum packagingA method of packing goods where air is removed from the container to create a vacuum; used to prevent spoilage and maintain freshness.
