金刚石砂轮是七十年代初开始研制和应用的，主要用于非铁族金属材料的加工。
Diamond grinding wheel is the development of the early seventies and applications, mainly for non-ferrous metals materials processing.
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。
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.
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