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coal grading

英 [coal grading]
美 [coal grading]

中文释义

[建] 煤的分级

单词分析

单词结构:

coal grading

字母数:12

记忆提示

🎯 重点记忆:

  • 单词拼写:coal grading
  • 核心含义:[建] 煤的分级

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更新时间:2026-02-01 00:01:21

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