英语单词分类 轻松记单词

black lead

black lead基本解释

石墨(笔铅)

black lead同义词

black lead相关例句

用作名词(n.)
  • Graphite is a soft black substance.
    石墨是一种软而黑的物质。

black lead英英释义

Noun:
  • used as a lubricant and as a moderator in nuclear reactors