Australia's Fortescue Metals Group, a leading exporter of iron ore, plummeted 8.1 percent.

澳大利亚主要的铁矿石出口商，弗特斯科股价大跌8.1%。

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Using the composite graphite rods with the sulphide of iron group metals as anode, the double-wall carbon nanotubes have been fabricated by arc discharging under hydrogen atmosphere.

用含有铁族金属硫化物的复合石墨棒作阳极，在氢气氛围下实施电弧放电，制备出了双壁纳米碳管。

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