vacuum tube
真空包埋机（牙科）
vacuum investing machine
暂无补充释义。
相关词条
vacuum-tube amplifier【电子】
Happiness vacuum cleaner
vacuum drying oven
vacuum blowing and pressing machine
vacuum extractor
relative and absolute vacuum tester
vacuum tempering furnace
vacuum investing machine
暂无补充释义。
vacuum tube
vacuum-tube amplifier【电子】
Happiness vacuum cleaner
vacuum drying oven
vacuum blowing and pressing machine
vacuum extractor
relative and absolute vacuum tester
vacuum tempering furnace