alloy
... alcohol n.酒细,乙醇 alloy n.开金;(金属的)成色 alphabet n.字女里,字女体系 ...
carated gold
aluminum alloy 铝合金; 铝合金 carated gold (alloy containing stated proportion of gold) 开金; 开金 copper (pure copper, as opposed to alloy) 紫铜; 紫铜 ..
metal
... messy a. 凌乱的,龌龊的 metal n. 金属,开金 metallic a. 金属的,金属似的 ...
1K即1K金=100/24 ×100%=4.167%是错误的,应该为1K即1K金=1/24 ×100%=4.167%