短語詞組短語flash -butt welding of rebar 鋼筋閃光對銲flash h butt welding machine 閃光對接銲機;閃光對銲機preheating flash -butt welding 預熱閃光對銲new flash -butt welding Equipment 新型閃光銲機crankshaft flash butt welding 曲軸電阻弧花壓銲pulse flash butt welding 脈沖閃光銲 返回 flash butt welding