high-grade metamorphic bituminous

英 [high-grade metamorphic bituminous]
美 [high-grade metamorphic bituminous]

中文释义

高变质烟煤

单词分析

单词结构：

high-grade metamorphic bituminous

字母数：33

记忆提示

🎯 重点记忆：

  • 单词拼写：high-grade metamorphic bituminous
  • 核心含义：高变质烟煤

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更新时间：2026-02-03 01:08:59