【正文】
。硬質(zhì)合金與鋼:一般以銅為釬料進(jìn)行釬焊。銅及其合金:一般以銀為釬料進(jìn)行釬焊。基本不受力構(gòu)件:一般以錫為釬料進(jìn)行釬焊。釬焊式車刀謝謝觀看 /歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAI