backing vacuum

backing vacuum是什么意思、backing vacuum怎么读
【化】 前级真空

backing vacuum汉语翻译

【化】 前级真空
相关内容
welding with flux backing
welding with backing
welding flux backing
welding backing
temporary backing
silicon backing wafer
polyester backing
piggybacking
permanent backing
floating head backing device
busy-backing
backing-out
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