资料来源 : pyDict

石墨

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Plumbago \Plum*ba"go\, n. [L., from plumbum lead.]
   1. (Min.) Same as {Graphite}.

   2. (Bot.) A genus of herbaceous plants with pretty
      salver-shaped corollas, usually blue or violet; leadwort.

资料来源 : WordNet®

plumbago
     n 1: used as a lubricant and as a moderator in nuclear reactors
          [syn: {graphite}, {black lead}]
     2: any plumbaginaceous plant of the genus Plumbago