Their ESR ages were calculated by the uranic linear accumulation model . The comparison of ESR ages with ages from U-series FT and TL methods was performed . The results show that the enamel tooth is a suitable material for ESR dating .

用 铀的线性积累模式计算 北京 周口 店 猿人 洞牙齿 化石的ESR年龄，并与U系、 裂变径迹法和热释光法的年龄进行了对比，结果表明釉质齿最适合ESR年龄的测定。

There were two stages degassing . There are certain relations between uranic deposits and red beds .

铀矿与红层有一定的关系，红层在 铀 成矿过程中 起重要 作用。

Determination of U ( VI ) in Uranic Ores and Uraniferous Rock by Selective Solubility-barium Salt Titration

选择性溶解-钒酸盐滴定法测定 铀矿石及含铀岩石中六价铀

A method for determination of B Ti V Zn Cr Mo and Cd in uranium dioxide and uranium uranic oxide powders by inductively coupled plasma mass spectrometry ( ICP MS ) is presented and described .

本文简述了等离子体质谱法测定 二氧化铀 和 八氧化 三 铀粉末中的硼、钛、钒、钼、铬、锌、镉等 7个 痕量 元素的方法。

Uranic mineralization is bound up with the continental red beds which was formed under dry and hot climate but has no relations with the marine red beds .

铀矿化主要与干热气候条件下形成的陆相红层有关，而与海相红层的关系不密切；

Studied the water flowing characteristics in gangue used as water-gravel-mixed filling material from one Uranic mine .

利用某 铀矿尾矿作为水砂充填料的水流特性研究，针对不同粒度的试样，进行 常 水头 渗透 试验。

A certain degree of pollution to surroundings is caused by the radionuclides about uranic well ventilation exhaust gas .

铀矿通风尾气的排放对周围环境造成一定程度的污染， 危害 公众健康。