单词	為數之五百
释义	同D
随便看	vacuum condenser vacuum condensing point vacuum consumable arc furnace vacuum consumable electrode arc furnace vacuum contactor vacuum contact plate process vacuum container vacuum continuity heating furnace vacuum control vacuum controller vacuum cooker vacuum cooler vacuum cooling vacuum copyholder vacuum correction vacuum crucible melting vacuum crystallization vacuum crystallizer vacuum curve vacuum cycle degassing process vacuum cylinder vacuum deaeration vacuum deaerator vacuum debinding vacuum decarbonizing