vacuum pump

pump that creates a partial vacuum in a vessel 真空泵.

v.=inquire, vac, vacacy, vacancy, vacant, vacant possession, vacate, vacation, vaccinate, vaccination, vaccine, vaccum cleaner, vacillate, vacillation, vacuity, vacuous, vacuously, vacuousness, vacuum, vacuum cleaner, vacuum tube (US) (Brit radio valve), vacuum-packed, vade-mecum, vagabond, vagary, vagina, vaginal, vagrancy, vagrant, vague, vaguely, vagueness, vain, vainglorious, vainglory, vainly, vainness, valance, vale, valediction,