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seam density of coal reserve
seam density of coal reserve
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[seam density of coal reserve]
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[seam density of coal reserve]
中文释义
[矿业] 绝对含煤率
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seam density of coal reserve
字母数:28
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单词拼写:seam density of coal reserve
核心含义:[矿业] 绝对含煤率
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更新时间:2026-02-07 23:01:15