A number of suites of Carboniferous, middle-lower Jurassic and lower Cretaceous hydrocarbon source rocks were developed in the basin groups in the Paleo-Asian and Tethyan structural confluence area.
古亚洲与特提斯构造交汇带盆地群发育石炭系、侏罗系（中下统）、白垩系（下统）等多套烃源岩，具有厚度大、分布广、有机质丰度高的特点。
The most hopeful development is the success of other river-basin organisations like the Nile and the Mekong groups.
最有希望的进展是其他一些河流流域机构的成功，如尼罗河和湄公河的团体组织。
Themost hopeful development is the successofother river- basin organisations like the Nile and the Mekong groups.
最有希望的进展是其他一些河流流域机构的成功，如尼罗河和湄公河的团体组织。
The fluvio-lacustrine strata in Zanda basin are divided into 3 groups, 4 sedimentary facies, 7 sedimentary subfacies and 11 lithologic members.
将札达盆地河湖相地层划分为3个组、4个沉积相、7个沉积亚相、11个岩性段。
The data of GC/MS of the whole oils show that there are three oil groups in the basin: group A with abundant 4-melhylsterancs.
全油定量GC／MS分析结果显示，珠江口盆地存在三类原油：A类原油以丰富的4-甲基甾烷为特征；
The data of GC/MS of the whole oils show that there are three oil groups in the basin: group A with abundant 4-melhylsterancs.
全油定量GC／MS分析结果显示，珠江口盆地存在三类原油：A类原油以丰富的4-甲基甾烷为特征；
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