uranium series

基本解释

There are three naturally occurring radioactive series - the thorium series, the actinium series, and the uranium series.
有三個天然存在的放射系列，即釷系、錒系和鈾系。
Cave stalagmites, corals, lake sediments are suitable for dating using the thermal ionization mass spectrometry (TIMS)uranium series method.
巖溶石筍、海洋珊瑚、湖泊沉積物等信息載躰可以用熱電離質譜（TIMS）鈾系技術定年。
The time scale and intensity of the water rock interaction in a uranium deposit can be semi quantitatively assessed using uranium series disequilibrium.
某鈾鑛牀中水-巖反應的時間範圍和強度，可通過對鈾天然衰變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.
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a radioactive series that starts with uranium-238 and proceeds by radioactive decay to lead-206