plum·ba·go /ˌplʌmˈbe(ˌ)go/
石墨
plum·ba·go /ˌpləmˈbe(ˌ)go/ 名詞
Plum·ba·go, n.
1. Min. Same as Graphite.
2. Bot. A genus of herbaceous plants with pretty salver-shaped corollas, usually blue or violet; leadwort.
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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