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- The Cenozoic Shahejie and Kongdian Formations, the Mesozioc and the Permo Carboniferous Systems are the main source rocks of the buried hill oil pools. 新生界的沙河街组、孔店组及中生界和古生界的石炭二叠系的烃源岩为潜山油气藏的主要油源。
- HIGH RESOLUTION SEQUENCE STRATIGRAPHY ANALYSIS ON THE PERMO CARBONIFEROUS IN NORTH CHINA PLATFORM 华北石炭、二叠系高分辨层序地层分析
- On Some Controversies of the Permo Carboniferous stratigraphy in North China Platform 华北地台石炭二叠纪若干地层问题
- Keywords stratigraphy sequence;tidal flat sedimentary system;coal rich unit;Permo carboniferous;Juye coalfield; 层序地层学;潮坪沉积体系;富煤单元;石炭二叠系;巨野煤田;
- Keywords Permo carboniferous;sulfur content of coal;correlation relation;genesis of sulfur; 石炭-二叠系;煤中硫含量;相关关系;硫的来源;
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- Keywords the cycle of the base level;coal bearing measures;Permo carboniferous System;Huainan coalfield; 基准面旋回;含煤地层;石炭二叠系;淮南煤田;
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- Swimming is the best way to tone up your body. 游泳是健体强身的最好方法。
- A fire was burning in the grate. 火在壁炉中燃烧着。
- They cleaved a path through the wilderness. 他们在荒原中开辟出一条路。
- They denounced him to the police as a criminal. 他们向警方告发他是罪犯。
- You didn't embarrass me in the slightest. 你一点也没让我为难。
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
- He arrived at the meeting place beforehand. 他提前到达会面地点。
- He beckoned to me from across the street. 他在马路对面向我招手致意。