Using the composite graphite rods with the sulphide of irongroupmetals 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。
2
Australia's Fortescue MetalsGroup, a leading exporter of iron ore, plummeted 8.1 percent.