lithological change的意思|示意

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岩性变化

岩性变化 ... 岩性标志：lithologic criteria 岩性变化：lithological change 岩性百分比图：lithic percentage map ...

Lithological characteristics of the seam roof are one of factors, which lead gas content to change partially.

煤层顶板岩性特征是影响瓦斯含量产生局部变化的因素之一。