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1.a uranium isotope with mass number 235; capable of sustaining chain reactions.
铀的同位素，原子质量数为，能进行持续的连锁反应。收藏指正
2.The function of the accelerative effect exerted by succinic acid and calcium ion on the separation of uranium isotope by UO22+-Mal-Na+ ion exchange displacement system was studied.
本文研究了丁二酸、Ca~+的加速效应在(O_2)_~(2+)-苹果酸-Na~+排代体系分离铀同位素中的作用。收藏指正
3.Using anion resin bead as a sample Carrier, colloid graphite and mixed solution of sucrose with rhenium powder as an adhesive, uranium isotope analysis was investigated in MAT-260 mass spectrometer with single filament. Metallic uranium ions were obtained. The sensitivity was 2—3 orders of magnitude higher than that of conventional method.
本文描述了采用阴离子树脂珠作为质谱样品载体,胶体石墨加蔗糖-铼粉混合溶液为粘接剂,利用单带,对铀同位素分析进行研究,获金属离子,使仪器灵敏度比常规液体滴样方法提高2—3个量级。收藏指正
4.In truth, Saddam Hussein had a massive clandestine nuclear weapons program that covered several different techniques to enrich uranium, including electromagnetic isotope separation, gas centrifuge, and gas diffusion.
事实上，萨达姆已经有了秘密的发展核武器的计划，并包括几种不同的技术进行铀的浓缩，其中包括电磁同位素分离、气体离心分离机和气体漫射。收藏指正
5.DETERMINATION OF THE URANIUM CONTENT AND 234U/238U ISOTOPE RATIO IN NATURAL WATER BY ISOTOPE DILUTION ALPHA SPECTROMETRY.
同位素稀释-α能谱法测定水中微量铀及~(234)U/~(238)U比值收藏指正
6.The Determination of Trace Uranium and Thorium in Coal Fly Ash by Isotope Dilution Mass Spectrometric Method
质谱同位素稀释法测定粉煤灰标样中痕量铀和钍收藏指正
7.For in ordinary uranium there is much more of the U238 isotope than there is U235 and, as you know, U238 will not undergo fission easily.
因为在普通铀中，铀238同位素要比铀235多得多，而且正如你所知，铀238不易裂变。收藏指正
8.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
9.The isotope of uranium with mass number235, fissionable with slow neutrons.
锕铀铀的同位素，原子质量数为235，与慢中子发生裂变收藏指正
10.the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239.
铀最常见的同位素，不能裂变，但与中子一起被照射后会产生可裂变的钚。收藏指正
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