单词乎

black lead

汉语翻译

石墨, 笔铅
【化】 石墨

英语解释

名词 black lead:

  1. used as a lubricant and as a moderator in nuclear reactors
    同义词:graphite, plumbago

动词 black lead:

  1. cover with graphite
    同义词:blacklead
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