uranium series

基本解释

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。
Cave stalagmites, corals, lake sediments are suitable for dating using the thermal ionization mass spectrometry (TIMS)uranium series method.
岩溶石笋、海洋珊瑚、湖泊沉积物等信息载体可以用热电离质谱（TIMS）铀系技术定年。
The time scale and intensity of the water rock interaction in a uranium deposit can be semi quantitatively assessed using uranium series disequilibrium.
某铀矿床中水-岩反应的时间范围和强度，可通过对铀天然衰变系放射性不平衡的研究得到半定量化。

Without going into entirely boring detail, the Iranian plan for uranium enrichment depended on a series of high speed centrifuges.
FORBES: Stuxnet Was a Joint US/ Israeli Project
So in the security realm, again, the Chinese acknowledgment in the statements that -- of the North Korean uranium enrichment program, setting forth a series of conditions that made the Republic of Korea confident enough to go into talks with the North Koreans -- is certain -- I would say one in the security basket.
WHITEHOUSE: Press Briefing
The serious business was conducted out of sight, and involved a series of meetings on a new diplomatic effort to persuade the Iranians to halt their uranium-enrichment program. (Iran argues that its enrichment program is for civilian purposes and is legal under the Nuclear Non-Proliferation Treaty.) Secretary of State Rice had been involved with developing a new package of incentives.
NEWYORKER: Preparing the Battlefield

a radioactive series that starts with uranium-238 and proceeds by radioactive decay to lead-206