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drawing back of pillars
drawing back of pillars
英
[drawing back of pillars]
美
[drawing back of pillars]
中文释义
后退式回采矿柱
单词分析
单词结构:
drawing back of pillars
字母数:23
记忆提示
🎯 重点记忆:
单词拼写:drawing back of pillars
核心含义: 后退式回采矿柱
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更新时间:2026-03-27 04:59:02