vacuum mat真空吸水板
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 injection抽空进样
vacuum equiqment真空装置
Vacuum pipelines真空管路
vacuum diffusion真空浸提
vacuum fumigator真空熏蒸器
vacuum flotation真空浮选
vacuum operation真空作业
vacuum ham press真空火腿模压机
vacuum sintering真空烧结
vacuum desicatorn.真空干燥器