graphite
graphite
noun
graphitic
adjective
语源
noun
- [mass noun]a grey crystalline allotropic form of carbon which occurs as a mineral in some rocks and can be made from coke. It is used as a solid lubricant, in pencils, and as a moderator in nuclear reactors
石墨
graphitic
adjective
语源
- late 18th cent.: coined in German (Graphit), from Greek graphein 'write' (because of its use as pencil ‘lead’)
考试词汇表
