陕甘宁盆地具有较有利的成岩层序地层学研究条件。

Ordos basin has favorable condition for the research work.

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第五部分综述陕甘宁边区语文教育的历史及其现实意义。

The fifth part summarizes the historical and natural significance of district Chinese education.

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第五部分综述陕甘宁边区语文教育的历史及其现实意义。

The fifth part summarizes the historical and natural significance of district Chinese education.

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