Machining various kinds of metals, including hard steel not higher than HRC 65.

可以加工各种金属材料, 还能加工≤HRC65的硬钢.

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Specially formulated hard steel plate used to cover warships, vehicles, and fortifications.

特制的坚硬钢板,用于保护战舰, 车辆, 和防御工事.

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A hard, steel - gray metal that takes a high polish , it is used g.

铬是质硬 、 可高度抛光的青灰色金属.

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There are three things extremely hard, Steel, A Diamond, and to know one's self.

有三样东西是极端坚硬的, 钢铁 、 钻石以及认识自己.

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