Uranium series dating technique is the important means of Quaternary chronology.
铀系不平衡定年技术是第四纪年轻年代学的重要定年手段。
There are three naturally occurring radioactive series - the thorium series, the actinium series, and the uranium series.
有三个天然存在的放射系列，即钍系、锕系和铀系。
According to the basic principle in uranium series disequilibrium, a calculating method for the mixing ratio of a three source recharge system of groundwater is raised.
在论述铀放射系不平衡原理的基础上，提出了地下水三元补给体系混合比的面积坐标算法。
Uranium mineralizations are hosted in the Middle-Lower Jurassic coal-bearing series.
下侏罗统含煤系是铀矿化赋存的有利部位。
The Longchuanjiang basin is one of the main uranium-hosting basin in western Yunnan, and a series of sandstone-type uranium deposits have been explored up to now.
龙川江盆地是滇西主要的铀矿赋矿盆地之一，现已探明一批砂岩型铀矿床。
The Longchuanjiang basin is one of the main uranium-hosting basin in western Yunnan, and a series of sandstone-type uranium deposits have been explored up to now.
龙川江盆地是滇西主要的铀矿赋矿盆地之一，现已探明一批砂岩型铀矿床。
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