used as a lubricant and as a moderator in nuclear reactors 同义词：graphite, black lead,
例句与用法
1.
Comparative study on national medicine plants - plumbago zeylanica l . and plumbago incida l 民族药白花丹和红花丹的药材比较研究
2.
Advances in studies on chemical constituents and pharmacological activities of plumbago zeylanica 白花丹化学成分和药理活性研究进展
3.
While if pulse laser ablation is applied , the output of mixed target is obviously more than that of plumbago target . the carbon nanotubes prepared by nano - tungsten catalyzer are very straight without any bent and their diameters are under 10nm . it is worth to pay more attention and need to study further 其中以钨作为催化剂原料与石墨混合制成固体靶，蒸馏水作为流动相时，得到的纳米纤维状产物直径不到10nm ，而且形状笔直，值得关注，目前国内外尚无以钨作为催化剂成功制备纳米一维碳材料的报道，因此该研究具有崭新而广阔的研究前景。
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