The power coefficient of reactivity (PCR) is a measure of whether a particular reactor's nuclear neutron population will tend to increase or decrease after an increase in the reactor's power.
PCR是一座反应堆的核中子数会在反应堆能量增加后增加或减少的衡量标志。
"This neutron star was born so hot that nuclear fusion happened on its surface, producing a carbon atmosphere just 10 centimetres thick."
这颗中子星产生时温度如此之高，其表面还在进行核子融合，从而产生了只有10厘米厚的碳大气层。
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。
The uranium fuel generates heat by neutron-induced nuclear fission.
铀燃料是由中子导致的核裂变产生的能量加热的。
This neutron star was born so hot that nuclear fusion happened on its surface, producing a carbon atmosphere just 10 centimeters thick.
阿尔伯塔大学的天文学家克雷格.汉克在新闻稿中写道，“这颗中子星诞生时表面温度非常之高，以至于在它的表面也可以发生核聚变，并产生了大约10厘米厚的碳质云层。”
Neutron coincidence counting is widely used in the authentication and management of nuclear material.
中子符合计数在核材料认证和管理中有着广泛的应用。
Neutron measurement technology is one of important Non-destructive assay methods in nuclear safeguards field.
中子测量技术是核保障领域非破坏性分析技术中重要方法之一。
Neutron Activation Analysis(NAA) is a valid nuclear analytical technique, whichoccupy an important position in the chemical element analysis.
中子活化分析是一种有效的核分析技术，在微量和痕量元素分析中占有重要地位。
Percent shear fracture appearance is an important factor to evaluate neutron irradiation embrittlement of nuclear pressure vessel steel.
在核压力容器钢的中子辐照脆化评价中，断口剪切面积百分比是一个重要的参数。
The chemical etching condition of CR-39 solid state nuclear track detector for neutron measurement was optimized by experiment.
通过实验确定了CR - 39固体核径迹探测器用于中子测量的化学蚀刻条件。
This paper expound the neutron dynamic math model of a nuclear reactor and applied this model to set up the transfer function.
阐述了核反应堆堆芯的中子动力学数学模型，并应用该模型建立传递函数。
According to the nonlinear dynamic model of a nuclear reactor, a new constant neutron flux density control method based on nonlinear state feedback is presented.
针对核反应堆点堆动态非线性模型，提出了一种非线性状态反馈的中子通量密度恒值控制的新方法。
Three different nuclear logging combinations can be formed according to thermal neutron logging, epithermal neutron logging and density logging.
根据热中子测井、超热中子测井和密度测井，可以形成三种不同的核测井组合。
In this paper, a kind of non-parameter model is constructed with the unit step response of the nuclear reactor neutron dynamic system.
利用核电站反应堆中子动力学系统的单位阶跃响应数据，得到了该系统的非参数模型。
A lustrous gray strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon.
一种有光泽、灰白色、坚固的金属元素，类似钛，在核反应堆中用作中子吸收剂，见于斜锆石中。
The large nuclear temperature evaluation would violate conservation of energy, and may lead a negative neutron KERMA factor.
这就可能使评价核温度太高而导致平均次级中子能量（?） 过大，破坏了能量守恒，而导致了负KERMA因子。
Nuclear fission, a process whereby a uranium nucleus absorbs a neutron, is not.
核裂变却是一个铀核吸收一个中子，而不是其它过程。
The neutron measurement system based on the Nuclear Pumped Laser (NPL) techniques was explored in this work utilizing the relationship between the neutron flux and the NPL laser power.
利用核泵浦激光强度与入射中子注量率的相关性，探讨了反应堆活性区核泵浦激光中子探测器的理论可行性。
Neutron irradiation-induced phosphorus intergranular segregation in the reactor pressure vessel steels is the one of main reasons resulting in brittle fracture of the nuclear reactor vessel.
中子辐照引起的核反应堆压力容器钢中磷的晶间偏析是导致核反应堆压力容器脆性断裂的主要因素之一。
The dust in the high-energy electron linac tunnel may be activated via photonuclear reaction and neutron nuclear reaction.
高能电子直线加速器隧道内的灰尘会通过光核反应、中子核反应而被活化。
The paper gives experiment theory and experiment method of neutron source multiplication method for site measurement technology in the nuclear critical safety.
给出了核临界安全中监督现场的测量技术——源倍增法的实验理论和实验方法。
Neutron measurement technology is one of important Non-destructive assay methods in nuclear safeguards field.
测量技术是核保障领域非破坏性分析技术中重要方法之一。
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。
Sealed neutron source and gamma source used in nuclear logging have strong radioactivity which is harmful to operators.
核测井使用的密封中子源和伽马源具有较强的放射性，对操作人员有一定的辐射损伤。
An evaluation of a complete neutron nuclear data for natural niobium has been finished on the data measured by experiments up to 1989 and theoretical calculations with program MUP2 and AUJP.
对于天然铌的全套中子核数据评价是依据测量到1989年的实验数据。同时，理论计算采用了MUP2和AUJP程序。
As the study of properties of warm asymmetric nuclear matte may shed a light on the study of neutron star, the liquid-gas phase transition of warm asymmetric nuclear matte is investigated.
由于对于非对称核物质性质的研究有助于对中子星物质的认识，考察了非对称致密热核物质的液—气相变。
The neutron energy deposition in media is more important in practical applications of nuclear engineering and technology.
中子在介质里的沉积能，对于核技术与工程应用是十分有价值的参量。
Properties of nuclear matter and neutron star are described in relativistic mean field theory with density-dependent effective interactions.
基于密度相关有效相互作用的相对论平均场理论，研究了核物质和中子星的性质。
Analysis of the activated background spectrum shows that natural copper is an ideal shielding material in fast neutron nuclear reactions.
通过分析天然铜的活化本底谱，可以看出它是快中子核反应中的最理想的屏蔽材料之一。
The technical study of neutron absorption boron's Measure is a very important job in the operation of nuclear power station using the te.
中子吸收法测量硼浓度的技术研究是核电站运行过程中利用中子吸收法监测硼浓度技术的一项重要工作。
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