中子寿命是指热中子密度降至一半所用的时间。
Neutron lifetime is the time in which the thermal neutron density falls to half.
此解的中子密度空间分布曲率是随堆功率变化的，因此它比点堆模型方程的解析解精确。
The space curvature of neutron density of this solution is changed according to the changes of reactor power, so it is more precise than the analytic solution of point reactor model.
中子星是宇宙中密度最高的天体之一，一茶匙的重量便高达数十亿吨，距离成为黑洞只有一步之遥。
One step from becoming black holes, neutron stars are thedensest objects in the universe.
超新星爆发以后，剩余的物质可能塌缩为一个黑洞，也可能形成一颗密度极大的中子星。
After the supernova, the leftover matter could either have collapsed into a black hole or an extremely dense neutron star.
图片靠近中心部分的白色光源为一种密度大，急速旋转的中子星，或是脉冲星--都是核心坍缩的超新星爆炸的残留物。
The white source near the center of the image is a dense, rapidly rotating neutron star, or pulsar, all that remains of a core-collapse supernova explosion.
磁星是中子星的一种，它的密度非常大，其质子和电子被迫结合形成中子。
Magnetars are a type of neutron star? An object so dense its protons and electrons have merged to form neutrons.
比它小一点的恒星会塌陷为中子星——高密度，无生命的星体，但是没有像黑洞那样那么奇特和不可思议。
Stars a little less than that mass are thought to collapse into what are called neutron stars — very dense, dead stars, but not quite so exotic and weird as black holes.
根据加西亚博士的说法，这意味着微中子可以像穿过人体的X光一样，用于将密度较大的岩石和较轻的岩石区分开来。
That means they can, according to Dr Gonzalez-Garcia, be used like X-rays passing through a human body, to pick out denser rocks from lighter ones.
在过去的七年中，这台德国装置一直在探测引力波——由诸如中子星和黑洞这样的超密度天体引发的时空波动。
For the past seven years, this German set-up has been looking for gravitational waves - ripples in space-time thrown off by super-dense astronomical objects such as neutron stars and black holes.
石灰岩具有相同孔隙度测量值，而湿砂岩将导致中子孔隙度的读数偏低，密度孔隙度读数偏高。
Limestone will have the same porosity measurements, whereas a wet sandstone will cause the neutron porosity to read low and the density porosity high.
泥岩和白云岩导致中子孔隙度的读数偏高，密度孔隙度的读数偏低。
Shale and dolomite will cause the neutron porosity high and the density porosity low.
理论上认为，储层含气使声波时差孔隙度和密度孔隙度增大，使中子孔隙度减少。
It is theoretically considered that reservoir gas-bearing makes interval transit time porosity and density porosity increase and neutron porosity decrease.
研究利用穿透概率法求解二维六角形轻水堆燃料组件内中子通量密度分布。
The paper describes the model for calculating the neutron flux density distribution in two dimensional hexagonal geometry assembly of light water reactor (LWR) by transmission probability method.
最常见的矿物识别交会图是中子-密度交会图。
The most common mineral identification plot is a neutron-density cross plot.
当中子孔隙度与密度孔隙度曲线重叠时，会有密度孔隙度远高于中子孔隙度的特征；
When superposing neutron porosity log with density porosity log, density porosity is far higher than neutron porosity.
本文介绍一种用岩性密度和补偿中子双孔隙度法评价低孔隙度白云岩气藏的方法。
A method for evaluation of low porosity dolomite reservoir using lithology density and compensated neutron logs is presented in this paper.
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。
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.
此适用于多种测井曲线，如侧向测井、感应测井、中子测井、密度测井和自然电位测井等曲线。
This method is applicable to various log curves, such as laterolog, induction electrolog, neutron log, density log and self potential log curves.
就中子物质计算并讨论了二体中心势中各成分对出现铁磁相变临界密度的影响。
The effect of each composition of two-body central potential on the critical density for ferromagnetic transition is calculated for neutron matter.
但是，对埋藏较深的气层而言，由于其孔隙度曲线特征并不明显，故用常规方法识别十分困难，特别是当密度孔隙低于中子孔隙度时，上述两方法识别气层均失败。
But it will fail to recognize the gas bearing bed buried deeper by the two methods as its porosity log feature is not obvious, especially when density porosity is lower than neutron porosity.
本文从密度和中子测井信息中提取的地层体积密度及含氢指数，分别同气层体积密度及含氢指数的下限值作比较，前者小于后者，直观指示为气层。
In this paper, the stratigraohic volume density and hydrogen index gained from the information of density-neutron logging are respectively compared with both the low-limit values of gas formation.
着重探讨了放射性测井曲线中自然伽马测井曲线、补偿中子测井曲线和补偿密度测井曲线的高分辨率处理方法及其应用效果。
This article mainly deals with the resolution enhancement technique and its application in radioactive logs, such as natural gamma log, compensated neutron log and compensated density log.
结果表明：三体核力重排效应对质子和中子单核子势均具有排斥性，而且其贡献随动量和密度增加而迅速增大。
We show that the rearrangement contribution of TBF to neutron and proton single-particle potentials is repulsive and increases rapidly with increasing density and momentum.
中子和物质的反应速度与中子的密度、中子的速度、原子核密度以及特有的反应截面有关。
The reaction rate of neutrons with matter depends on the density of neutrons, their velocity, the nuclear density and the particular interaction cross section.
详细地介绍了中子与密度测井在东濮凹陷勘探中的应用情况。
This article will introduce the application of neutron-density log in Dongpu depression exploration.
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。
Three different nuclear logging combinations can be formed according to thermal neutron logging, epithermal neutron logging and density logging.
中子孔隙度的读数低；而密度孔隙度的读数高，且相对而言较为准确。
The neutron porosity log reads low, whereas the density log reads high and relatively accurately.
剩下的东西塌陷成为密度极高的物体，叫中子星。
The stuff that is left collapses down to an extremely dense object known as a neutron star.
还计算了在M - S势作用下的中子物质出现铁磁相变的临界密度、含有铁磁相变的物态方程及中子星模型。
For neutron matter with M-S interaction, the critical density of the ferromagnetic transition, the equation of state and the neutron star models are calculated.
还计算了在M - S势作用下的中子物质出现铁磁相变的临界密度、含有铁磁相变的物态方程及中子星模型。
For neutron matter with M-S interaction, the critical density of the ferromagnetic transition, the equation of state and the neutron star models are calculated.
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