That programme was about “weaponisation”: the fiddly business of making a device that can set off a chain reaction in nuclear fuel.
该计划致力于武器化：虽然制造在核原料中引发链式反应的设备是一件高精细度的工作。
The document also recommends that engineers continue adding boron to cooling water to help prevent the cores from restarting the nuclear reaction, a process known as criticality.
这份调查报告同时也建议说，核电站工作人员应当在冷却水中加入硼已防止堆芯重新进入核反应临界状态。
The nuclear reaction can be controlled utilizing rods made of neutron-absorbing material, such as boron, essentially shutting down the fission process.
核反应可以通过使用由吸附中子的材料构成的棒条，比如硼，来减慢裂变过程，从而控制其反应。
During a nuclear fission chain reaction, the tubes heat up to extremely high temperatures, and the way to keep them safe turns out to also be the way to extract useful energy from them.
核裂变连锁反应发生时，导管被加热到极其高的温度，将热量安全导出则意味着可以提取裂变产生的可利用能量。
A nuclear reaction is at its most basic nothing more than a reaction process that occurs in an atomic nucleus.
从最通俗的角度讲，核反应实质上就是发生在原子核中的一种反应过程。
Nuclear release can take place as a result of the nuclear reaction. After the reactor is stopped it is thoroughly cleaned and washed with special deactivating powder.
作为核反应的结果，核泄漏有可能发生。反应堆被关闭后，必须进行彻底的清理，并使用去活药剂进行清洗。
After Israel developed a nuclear weapons capability in the late 1960s, no regional nuclear chain reaction followed, even though the country is surrounded by rivals.
以色列在20世纪60年代末期提高了核武器研发能力，但并没有在该地区引起核武器开发的链式反应。
9 SEC the control rods, made of boron and silver, are lowered, which slows down the nuclear chain reaction within the core.
9秒由硼和银制成的控制棒被降下，减慢反应堆堆芯内的核链式反应。
Without cooling water, the irradiated nuclear fuel could spontaneously combust in an exothermic reaction.
没有冷水，辐照性核燃料就会在放热反应发生的同时燃烧。
Keep in mind, this is not a nuclear reaction, but a simple chemical explosion that often (as in this case) results in little or no radioactive material being leaked into the outside world.
注意，这并不涉及核反应，只是简单的化学爆炸，它基本不会导致放射性物质泄漏出来。
These radioactive elements are by-products of the fission reaction that generates power in the nuclear plants.
这些放射性元素为核电站裂变发电时的副产品。
The only difference is where the heat comes from — to get it, you can light coal on fire, or you can create a controlled nuclear fission reaction.
区别仅在于热气从哪里来，你可以在火上燃煤，或者你可以创造一个可控制的核裂变反应。
This creates what is known as a critical mass of nuclear material, which releases its energy instantaneously as atoms inside it split in an uncontrolled chain reaction.
这会造成核原料所谓的临界质量，当其中的原子在无法控制的连锁反应中***时，能在瞬间开释出能量。
Japan itself had a Level 4 accident in 1999, when three workers preparing fuel for a reactor at a Japan Nuclear Fuel Conversion plant triggered a nuclear chain reaction, called a criticality.
日本在1999年就曾发生过一次4级核事故（又称“东海村核事故”——译注），当时在日本核燃料转换公司（Japan NuclearFuel Conversion）的一个燃料厂内，三名正在为反应堆准备燃料的工人引发了一次链式核反应，使反应堆达到临界状态。
Us scientists are trying to use the world's largest laser to set off a nuclear reaction so intense it will make a star bloom on the surface of the Earth, CNN reported.
据美国有线电视新闻网报道，美国科学家正在试验用全球最大激光器制造核反应，在地球表面造出一颗星星。
Fast-moving neutrons are produced by fission reaction in a nuclear reactor. Water is commonly used to moderate and control the speed of neutrons.
核电站的核反应堆中，核裂变会产生高速移动的中子，通常是用水去阻隔及控制中子的移动速度。
It is one of the most frontal fields of nuclear physics to study nuclear structure and reaction mechanism in extreme conditions.
在极端条件下，研究核结构、反应机制是当前核物理研究的前沿领域之一。
A supernova not only blasts the heavy elements formed in the star out into interstellar space, but also initiates its own nuclear reaction, producing even heavier elements.
超新星不仅把恒星内形成的重元素抛入星际空间，而且它本身也会引发核反应产生更重的元素。
At the other extreme, a star whose mass is too great will become so hot as a result of accelerated nuclear reaction.
另一极端方面，质量过大的恒星将会由于加快了原子核反应而变得很热。
Under the assumption of statistical equilibrium, the nuclear temperatures are extracted, and the influence of the reaction mechanism on the nuclear temperature are also investigated.
在假定统计平衡的条件下提取了有关核温度参量，并研究了不同反应机制及靶核对提取的核温度的影响。
This article reviews the methods of studying the nuclear structure by means of the nuclear reaction as a tool for investigation. It is divided into two parts.
本文共分两部分：第一部分是叙述如何从原子核单独能级的特性和系统性来研究原子核的结构，并例举了四类研究这些能级最重要的原子核反应实验。
This formula can integrate MSC and HFM with the optical model and can give self-consistent and uniform description for nuclear reaction.
这一公式将MSC和HFM与光学模型相联系，对核反应给出自洽和一致的描述。
There's been a mixed international reaction to Iran's start of an operation to load fuel into its first nuclear power station at Bushehr.
伊朗开始向布什尔首座核电站运输燃料，引起不同的国际反应。
The energy-angular double-differential spectrum of secondary particle in light nuclear reactions is closely connected with reaction mechanisms, and is quite useful to nuclear technology applications.
轻核反应次级粒子的能量角度双微分谱同反应机制是密切相关的，而且对核工程技术很有应用价值。
A basic theoretical research on light nuclear reaction and the nuclear data calculation, as the two contents of this thesis have been performed.
本论文主要包含轻核反应基础理论研究和核数据应用研究两方面的内容。
With MCNP/4B code, the influence of cut-off energy, flux tallies, nuclear databases and perturbation on the reaction rates calculation with neutron-activation method are analysed.
用MCNP／4B程序，对核活化法反应计算中的截断能量、通量计数方式、数据库、阈探测器之间的扰动等因素的影响作了分析。
With MCNP/4B code, the influence of cut-off energy, flux tallies, nuclear databases and perturbation on the reaction rates calculation with neutron-activation method are analysed.
用MCNP／4B程序，对核活化法反应计算中的截断能量、通量计数方式、数据库、阈探测器之间的扰动等因素的影响作了分析。
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