氦滲透 的英文怎麼說
中文拼音 [hàishèntòu]
氦滲透
英文
helium permeation-
Non destructive testing. tightness testing. recommended practices for testing by vacuum dye penetration by means of helium
無損檢驗.密封性的試驗.氦氣真空著色滲透法的推薦實施規程
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