For high strength and durability, what you really want is a metalalloy 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。
2
Chinese customs officials recently let it be known that they had stopped a shipment of vanadium, a metal that can be used as an alloy to strengthen missile casings.
最近中国海关官员透露他们已停止运送可当做合金用于强化弹壳的重金属——钒。
3
So it is necessary to measure and calculate the parameter of alloymetal.