例句 /

Methods Based on comprehensive analysis of isopaches, sadstone percentage, paleocurrent and sadstone content, a reaserch is made on the sedimentary environment of Upper Permian Shiqianfeng Formation in the southern of north China.

Methods Based on comprehensive analysis of isopaches, sadstone percentage, paleocurrent and sadstone content, a reaserch is made on the sedimentary environment of Upper Permian Shiqianfeng Formation in the southern of north China.

方法根据岩石碎屑组分基本数据,运用地层厚度、砂岩百分含量、古水流、砂岩成分的系统分析方法。