A.金屬材料的熱物理性質(zhì) B.金屬材料的力學(xué)性質(zhì) C.點(diǎn)焊焊接參數(shù) D.焊件厚度 E.焊接電流
A.凸焊 B.點(diǎn)焊 C.對(duì)焊 D.縫焊 E.電焊
A.8% B.9% C.10% D.11%