secondary coal recov
查询英语单词中文释义、音标、发音和例句。
secondary coal recovery
英
[secondary coal recovery]
美
[secondary coal recovery]
中文释义
煤二次开采
单词分析
单词结构:
secondary coal recovery
字母数:23
记忆提示
🎯 重点记忆:
- 单词拼写:secondary coal recovery
- 核心含义:煤二次开采
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更新时间:2026-09-26 16:54:29