词语backingup
解释封底焊
词性名词
backingup〔名词〕回流详细»
backingup〔名词〕封底焊详细»
backingup〔名词〕封底焊,裹壁砖详细»
封底焊back sealing run;backing up详细»
封底焊backingup详细»
封底焊back run welding;sealing run详细»