vacuum arc真空电弧
vacuumn.真空;真空吸尘器;空白adj.产生(利用)真空的v.用吸尘器打扫
vacuum crystallization真空结晶
vacuum pressure valves真空压力阀
vacuum interface board真空接口板
vacuum welding machine真空焊箱
vacuum casting machine真空铸造机
vacuum pulse nitriding真空脉冲渗氮
vacuum trabeculoplasty真空小梁成形术
vacuum dryer with rake[化] 真空耙式干燥器
vacuum pre-stressing真空预压
vacuum decarburization真空脱碳