double heading
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double heading
英
[double heading]
美
[double heading]
中文释义
[矿业] 双平行煤巷
单词分析
单词结构:
double heading
字母数:14
记忆提示
🎯 重点记忆:
- 单词拼写:double heading
- 核心含义:[矿业] 双平行煤巷
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更新时间:2026-08-28 13:41:00