malleable hard iron 韧性铸铁
Hard Iron Calibration 先进的硬铁校准功能
hard iron ore 铁矿石
ni-hard iron 镍硬铸铁
hard cast iron 硬铸铁
as hard as iron 坚如铁石
Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be back to life with a little creativity.
艺术不仅可以给别人带来快乐,而且它还表明,即使是冰冷、坚硬的铁,也可以用一点创造力恢复生机。
The ground floor there are oil, natural gas, coal, geothermal, limestone, dolomite, hard iron bauxite and other mineral resources, rich reserves, the exploitation of high value.
地下蕴藏着石油、天然气、煤炭、地热、石灰岩、白云石、硬铁矾土等矿产资源,储量丰富,具有较高的开采价值。
In Sichuan, soldiers spent a hard time creeping across Luding Chain Bridge, which was made up of 13 iron chains, in the middle of gun fire.
在四川,士兵们在炮火中艰难地爬过由13条铁链组成的泸定铁桥。
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