The surface or outer layer of a metal alloy.

金属合金的表面或外层。

Ferrous alloy. A metal alloy for which iron is the prime constituent.

铁为主要组成的金属合金。

Nonferrous alloy. A metal alloy for which iron is not the prime constituent.

铁不是主要组成的金属合金。

For high strength and durability, what you really want is a metal alloy of some kind.

如果旨在高强度和持久性，金属合金是您的不二选择。

OptiClear has high solvency power, yet it will not affect metal or metal alloy.

它拥有强大的溶解能力，但是不会影响到金属或者合金。