seam thickness and variation
seam thickness and variation
煤层厚度及变化
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Some kinds of genesis patterns of the seam thickness variation caused by bedding slip structure are analyzed and the forming reason of the coal parameter variation are expounded.
分析了层滑构造引起煤厚变化的几种成因方式，解释了煤质变化的形成原因。
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