字典網>> 英漢字典>> B開頭詞條>>back of weld的意思 漢英字典back of weld中文翻譯：【化】 焊縫背面back of weldback of weld相關詞條：back out back tail lever back-up battery backtrace technique backward-bias backstroke backside attack back injury back-flush(ing) chromatography back slang