vacuum oil真空油

vacuum packaging machine真空包装器

vacuum pump真空泵

vacuum refrigerating machine真空冷冻机

vacuum reservoir真空罐

vacuum seal真空密封

vacuum seamer罐头折边封盖机

vacuum sintering真空烧结

vacuum system真空系统

vacuum tank真空罐

vacuum technique真空技术

vacuum test真空试验

vacuum tight真空密封的

vacuum trap真空阱

vacuum tube真空管

vacuum tube rectifier真空整流

vacuum tube voltmeter真空管电压表

vacuum valve真空阀

value值

valve阀

valve arm阀杆

valve body阀体

valve bonnet阀盖

valve box阀箱

valve case阀箱

valve casing阀箱

valve chest阀室

valve cock阀栓

valve cover阀盖

valve diagram阀动图

valve follower气门挺杆

valve gear阀动装置

valve grinding磨阀

valve guard阀档板

valve guide阀导承

valve head气门头

valve in head engine顶阀式发动机

valve lap阀重叠

valve lever阀杆
关键字:焊接专业词汇
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