Non-destructive testing of steel tubes - Automatic electromagnetic testing of seamless and welded (except submerged arc welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness是什么意思_Non-destructive testing of steel tubes - Automatic electromagnetic testing of seamless and welded (except submerged arc welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句