铍铜母合金锭
beryllium-copper master ingot
扩径型耐热铝合金母线
expanded-diameter heat resistant aluminium alloy bus
铅钙母合金
Lead-Calcium master alloy
异型铜合金母线
non-conventional type copper alloy busbar
Cu－Al－In仿金合金
imitation gold Cu-Al-in alloy
彩色及白色开金合金
Colored and white karat gold alloys