Coal formation strata is one of the basic geological condition for occurrence and form of Mingshui spring group.

煤系地层是明水泉群形成和存在的基本地质条件之一。

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Coal formation strata is one of the basic geological condition for occurrence and form of Mingshui spring group.

煤系地层是明水泉群形成和存在的基本地质条件之一。

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