1·The Permian system of East Henan is well developed and widely distributed.
豫东二叠系发育良好，分布普遍。
2·The clastic rocks in Permian System at the southeast area of Ordos Basin contain tremendous potential in exploration of natural gas.
鄂尔多斯盆地东南部二叠系碎屑岩具有巨大的天然气勘探潜力。
3·The gas produced from Qugu-1 Well in Linnan area proved that the main gas source rock was the coal bed of the Carboniferous-Permian System.
临南地区曲古1井产出的天然气证明是源自石炭系和二叠系煤岩。
4·The Upper Permian System Longtan coal measure in the Changguang coal deposit is a complete sedimentary cycle, consisting of a regressive and a transgressive series.
长广煤田上二迭统龙潭含煤岩系是由海退系列和海进系列组成的一个完整沉积旋回。
5·Two stratigraphic units belonging to Cenozoic Group have. been found between the Permian System and the Quarternary Loess from Xiangshan hill terrain in Hancheng Mining Area.
在韩城矿区象山山地，于二叠系之上，第四系黄土之下，发现了两套属于新生界的地层单位。
6·The Mesozoic source rocks at the northern Tarim basin belong to argillaceous rocks of continental facies, which are mainly developed in the Permian System and Jurassic System.
塔里木盆地北部地区中生界生油岩为陆相泥质生油岩，主要发育在三叠系、侏罗系。有两个生油岩发育中心，库车坳陷区和阿瓦提断陷-满加尔坳陷区。
7·The main orebody of Huashupo Copper Deposit in Tongling occurs in silica horizon of Qixia Group of Lower Permian System, while minor ores controlled by strata occur in Gufeng Group.
铜陵花树坡铜矿床主矿体赋存于二叠系下统栖霞组硅质层内，次要矿体赋存于孤峰组内，受层位控制。
8·The discovery has filled the gap in the studies of the Permian system occurring in micro-landmass and is significant to the researches of numerous oceanic islands in the ancient Tethyan.
该套地层的发现填补了微陆块上二叠系地层的空白，对古特提·斯多岛洋研究具有重要意义。
9·Permian system in Tazhong area may be divided into three lithology groups: lower clastic group, volcanics group and upper clastic group based on the data of core, drilling, logging and so on.
前言： 依据岩心、钻井、测井等资料，将塔中地区二叠系分为三个岩性组：下碎屑岩组、火山岩组、上碎屑岩组。
10·At Yaoqiao coal mine, once and successful shaft washing using hydrochloric acid is made in the drillhole aquifer stuffed by the Permian system Taiyuan group NO. 4 lime, good result has been obtained.
姚桥煤矿通过对二叠系太原组四灰含水层被堵塞钻孔和裂隙发育不畅钻孔利用盐酸洗井，一次洗通，取得了良好的效果。