vacuum: n.(pl. vacuums, vac-ua )1.真空；空处，空虚，空白。2.〔美口〕吸尘器(＝ vacuum cleaner)。短语和例子a low [partial] vacuum低度[未尽]真空。 feel a vacuum in the lower regions 〔戏谑语〕觉得饿。vi.,vt.〔美口〕1.用吸尘器扫除。2.用真空干燥机干燥。adj.1.真空的。
Main products include suited offset point imprinter bearing sets comber gear for weaving industry metal mould and gear vacuum gear synchro gear worm worm wheel . acme whorl fitting and all kinds of fittings with various gears 主要产品：印刷行业各种胶印机和印后设备轮及轴承套，纺织行业精梳机轮，金属板材压延模具和轮，真空泵轮同步带轮蜗杆蜗轮副acme螺纹副各种直斜锥及各种盘类和轴类件等机械加工件。
