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1.Detection of uranium is needed to determine the accurate age of this star.
检测铀则需要准确判定年龄这颗恒星.收藏指正
2.THE STUDY ON URANIUM-SERIES DATING OF FOSSIL BONES AND AN ABSOLUTE AGE SEQUENCE FOR THE MAIN PALEOLITHIC SITES OF NORTH CHINA
铀子系法测定骨化石年龄的可靠性研究及华北地区主要旧石器地点的铀子系年代序列收藏指正
3.ISOTOPE AGE OF PRINCIPAL MINERALIZATION PERIOD IN URANIUM DEPOSIT No. 460
460铀矿床主要矿化期的同位素年龄收藏指正
4.The average length of employment and age of the occurrence of the silicosis in those exposed only to uranium dust showed and younger.
只有铀矿粉尘接尘史的矽肺病例平均发病工龄短，平均发病年龄较轻。收藏指正
5.The age determinations made by way of radiometric dating in Dabie mountain area mainly utilize the potassium-argon (K-Ar and 40Ar/39Ar) method and the uranium-lead (V - Pb) method.
大别山区同位素年龄资料主要有K—Ar及40Ar/39Ar法和V-P_b法。收藏指正
6.The uranmm mlnerahzation shows that different types of mineralization have different mineralization ages, which could be divided into three periods: 1) 110—120 Ma—the age of alkali-metasomatism type uranium mineralization;
铀成矿作用研究表明不同的矿化类型发生的年代不同,可划分3期:碱交代型铀矿化年龄为110—120Ma;收藏指正
7.Since Antoine Henri Becquerel, the French physicist, discovered the radioactivity of uranium in 1896, scientists in different countries have dedicated to the exploitation and utilization of nuclear energy. The first man-made nuclear reactor was run in 1942, which means the human being stepped into the Nuclear Age.
自1896年法国物理学家贝克勒尔发现铀的放射性以来,科学家们一直致力于核能的开发与利用,并在1942年运行了第一座人工反应堆,从此人类进入核能时代。收藏指正
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