铀核

核裂变却是一个铀核吸收一个中子，而不是其它过程。

Nuclear fission , a process whereby a uranium nucleus absorbs a neutron , is not .

钍铀核燃料循环研究

Study on the thorium - uranium fuel cycle

从19世纪70年代投入运行以来，日本福岛第一核电站利用六个沸水堆，通过铀核裂变来产生热能。

In operation since the early1970s , Japan 's Fukushima Daiichi nuclear plant uses six boiling water reactors , which rely on uranium nuclear fission to generate heat .

北韩拖延提交清单的主要症结是，美国指控北韩有一个发展秘密的金属铀核武器项目，并怀疑北韩帮助叙利亚建设了一个核设施。

The main sticking points of the stalled declaration are U.S. accusations the North pursued a secret uranium-based weapons program and suspicions Pyongyang may have helped Syria build a nuclear facility .

什么是卵石层反应堆，事实上就是同样的，铀核包装的微粒，有大约1万的微粒，被放入了一个石墨卵石里。

What a pebble bed reactor is , is in fact the same coated particle with the uranium kernel and there are about ten thousand of these particles that are put into a graphite pebble .

莫瑞斯·普利斯现在当讲师已经两年了，他和艾伦谈了一个关于铀核裂变的想法，莫瑞斯想出了一个方程式来计算链式反应需要的条件注。

Maurice Pryce , then in his second year as a university lecturer , had a conversation with Alan about the new idea of uranium fission , and Maurice found an equation for the conditions required for a chain reaction to start .

铀用作核电厂的燃料。

Uranium is used to fuel nuclear plants .

浓缩铀是核武器的关键组成部分。

Enriched uranium is a key component of a nuclear weapon

一个微观两参数核模型和它对超铀区核Yrast线的应用

A Microscopic Two-Parameter Nuclear Model and Its Application to the Yrast Lines of Actinide Nuclei

基于费米子动力学对称模型提出了一个两参数模型.数值计算显示此模型能很好地符合超铀区核Yrast线能谱。

A two-parameter model based on the microscopic fermion dynamical symmetry model is proposed . In terms of the numerical calculation , it is shown that this model can fit the data of the yrast lines of nuclei in the actinide region in very high precision .

成分浓缩铀是核武器的关键组成部分。

Enriched uranium is a key component of a nuclear weapon .

铀在核燃料及核工程领域有着非常广泛的应用。

Uranium possesses a wide range of usage in nuclear engineering .

铀溶液核临界安全实验装置首次物理启动

First Start-Up of Nuclear Criticality Safety Experiment Facility for Uranyl Nitrate Solution

本文集中研究中子与铀原子核的碰撞。

The research is concentrated on the collisions of neutrons and uranium nuclei .

断绝了伊朗使用浓缩铀生产核武器的途径。

It shuts down Iran 's path to a bomb using enriched uranium .

乌克兰还将转移几座使用低浓缩铀的核研究设施。

Ukraine will also convert its several nuclear research facilities to use low enriched uranium .

我们所测量到的氙同位素，根本都不是直接由铀的核分裂而来。

None of the xenon isotopes we measured were the direct result of uranium fission .

在铀溶液核临界装置上进行了实验研究。

The experiment research has been done on the uranium solution nuclear critical safety experiment assembly .

星期六，两国的专家们把装有铀的核燃料棒加载进核反应堆。

On Saturday , specialists from both countries loaded uranium packed fuel rods into the reactor .

如果印度把它的民用和军用核计划分割开来，将使得印度能够从“核供应国集团”购买亟需的金属铀和核技术。

In exchange for separating its civil and military nuclear programs , India would be able to buy critically-needed uranium and nuclear technology from the Nuclear Suppliers Group .

主要阐述了铀溶液核临界安全实验装置控制保护系统的设计思想、保障技术和系统原理。

This paper described the design mind and support technology and system principle of the control protection system of nuclear criticality safety experiment facility for nitride uranium solution .

20世纪三四十年代，原子物理学家们发现中子轰击铀原子核的裂变现象并首次实现可控裂变链式反应，把世界带进了原子能时代。

During the 30s and 40s of the last century atomic physicists discovered the fission of uranium nuclei bombarded by neutrons and realized the first self-sustaining controlled fission chain reaction , which ushered in the atomic age .

第三个要素是中子「冲剂」中子缓冲剂能使铀原子核分裂时所释放出的中子减速，而更容易促使其他的铀原子核分裂。

The third important ingredient is a neutron " moderator ," a substance that can slow the neutrons given off when a uranium nucleus splits so that they are more apt to induce other uranium nuclei to break apart .

由于人类对铀矿的开采和提炼，以及铀在核武器和核能源方面的广泛应用，造成了环境中大规模的铀污染，这使得了解铀在环境介质中的迁移转化过程十分必要。

The extraction and processing of uranium for use in the nuclear weapons and in commercial nuclear energy production have led to extensive uranium contamination in the environment . This makes it imperative to understand the processes that affect the environmental mobility of uranium .

铀作为核燃料的一种能源，随着核工业的日益发展，高品位铀矿逐步耗竭，造成了低品位矿/尾矿的大量累积。

Uranium , as a source of nuclear fuel , with rapid development of nuclear industry ( eg. nuclear electricity , ship industry ), the increasing application has gradually led to the exhaustion of high-grade ore reserves and accumulation of large quantities of low-grade ores / tailings .

关于季铵盐萃取铀的多核萃合物（R4N）2U3O（10）的研究

Study on polynuclear complex of uranium ( r_4n ) _2u_3o_ ( 10 ) in extraction by quaternary ammonium salt

铀水系统核临界安全的蒙特卡罗计算

Monte-Carlo Calculation of Nuclear Criticality Safety of Uranium-Water System

GB/T15444-1995铀加工及核燃料制造设施流出物的放射性活度监测规定

Regulations for monitoring radioactivity in effluents from uranium processing and nuclear fuel fabrication facilities

金属铀具有独特核性能而广泛应用于国防和核能工程等领域。

Uranium is widely used in the national defense and nuclear energy engineering fields for its unique properties .

通过分裂最重的原子核，如铀的原子核，就可以获得核能。

Nuclear energy can be obtained by breaking up the nuclei of the heaviest atoms such as those of uranium .