登录

双语推荐：相对论性

进入期刊文章
本文研究相对论性非完整系统的Lagrange对称性,给出相对论性非完整系统Lagrange对称性的判据,得到相对论性非完整系统Lagrange对称性导致的守恒量及其存在条件,最后举例说明结果的应用.
In this paper,we are study the symmetry of Lagrangians and the conserved quantities for a nonholo-nomic relativistic system.The Criterion of the symmetry for a nonholonomic relativistic system is given.Then the conditions under which there exist a conserved quantity and the form of the conserved quantity are obtained.And finally there is an example to illustrate the application of the results.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
本文以相对论长度收缩效应为基础，分析计算了“特种杆”从静止加速到匀速运动状态时的长度变化，得出了静止长度变长的结论。再以相对论效应的普适性为由，将此结论推广到普通物体。文章进一步解释了历史上的贝尔飞船悖论，分析论证了相对论长度变化对长度测量的影响，通过设计思想实验，对相对论提出了质疑。
In this paper, based on the analysis of the relativistic length contraction effect, we have calculated the change in length of a special stick accelerating from zero to the state of uniform motion. The conclusion is that the rest length becomes longer. Furthermore, it explains the paradox of the Bell''s spaceship discussed in past years. Further analysis of the change of relativistic length demonstrates the impact of the length measurement through a thought experiment, then the theory of relativity is questioned.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
得到了周期区域上靠近稳态的相对论Boltzmann方程的时间周期解的存在性和稳定性。通过利用补偿函数和基本的能量估计，得到了线性化的相对论Boltzmann方程解的时间衰减，根据此结果和压缩映像原理，证明了相对论Boltzmann方程的时间周期解的存在性和稳定性。
The existence and stability of the time periodic solution to the relativistic Boltzmann equation around the relativ -istic Maxwellian in the torus are obtained .The time decay of solution to the linearized relativistic Boltzmann equation is ob-tained by using compensating function and basic energy estimates .By this and the contraction mapping methods the exist-ence and stablility of time periodic solution to the relativistic Boltzmann equation are shown .

[ 可能符合您检索需要的词汇 ]

进入期刊文章
本文论述影响物理学发展的8个问题：①在波粒二象性理论中，何处是“波有粒子性”的频率（波长）分界；②如何看Newton力学与相对论力学的分歧；③非相对论性量子波方程与相对论性量子波方程是否对立；④狭义相对论与量子力学究竟有无矛盾；⑤因果性是不是“自然科学家的底线”；⑥负速度是什么；⑦超前波、引力波是否存在；⑧基本物理常数会不会变化。本文认为对这些基本问题作梳理和澄清是很重要的．有助于找到物理学界再次陷入迷茫的原因。
In this paper, we discuss 8 selected problems in physics. ①In the theory of wave-particle duality, which frequency(wavelength)in the demarcation line between the wave and particle;②Views of scientist are divergent on the principle of Newton Dynamics and Relativity Dynamics;③The quantum wave equation of relativistic and non-relativistic is conflicting or not;④The Special Relativity and Quantum Mechanics is conflicting or not;⑤The causality is lower-limit of scientists or not;⑥What is the negative velocity;⑦The advanced waves and the gravitational waves are present or not; ⑧Variation possibility of the basic physical constants.…… In modern times, physicists feel puzzled, but we recover one''s bearings and return to the fold.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
为研究相对论性朗缪尔湍动特性,采用描述朗缪尔波与离声波非线性耦合过程的相对论性萨哈罗夫方程组,进行数值模拟,获得一系列朗缪尔波的时间演化图。图组形象地模拟出相对论性强朗缪尔湍动过程,图中给出不同相对论参数下朗缪尔波场强的最大值。研究表明,电子运动相对论性越强,朗缪尔波的演化耗时更长,朗缪尔波场越强,湍动越剧烈。这可为湍动加速或等离子体加热提供参考数据,对超强激光等离子体(或天体物理)中出现超热电子(或快离子流)的产生机制研究有一定的参考价值。
In order to study the characteristics of relativistic Langmuir turbulence,we numerically calculated the relativistic Zakharov Equations which had the nonlinear coupling process of Langmuir wave and ion sounds wave.A series of the evolution images of Langmuir waves and ion sound waves were obtained.From these figures,The process of relativistic strong Langmuir turbulence and the maximal intensity of Lang-muir turbulence are were offered from these figures.Our studies have shown that the stronger the relativis-tic electron moved,the longer the evolution time of the Langmuir waves were,and the stronger the intensi-ty of Langmuir was.The research conld provide some reference for turbulent acceleration or plasma heat-ing,which should be significative to the generation mechanism of extremely hot electron (or fast ion flow) from the super laser plasma (or astrophysics).

[ 可能符合您检索需要的词汇 ]

进入期刊文章
为了研究相对论性朗缪尔孤子的特性，对从动力论出发所获得的超强等离子体中相对论性强朗缪尔湍动控制方程组进行了理论分析。结果表明，随着电子的平均洛伦兹因子以及场的湍动参量增加，朗缪尔孤子的波包半宽变窄，孤子总能量和总动量相应地增大，且电子的相对论效应对孤子总能量和动量的非线性部分的影响远大于线性部分。该研究可为超强激光等离子体中相关的非线性现象提供新的理论参考。
In order to study the characteristics of relativistic Langmuir solitons , the control equations of relativistic strong Langmuir turbulence in ultrapowerful laser plasma were obtained from momentum theory .And then, theoretical analysis was made .The research shows that half-width of wave-packet will become narrower and the total energy and momentum of solitons will become bigger with the increasing of average Lorentz factor of electrons and turbulence parameter of field.The relativistic effect of electrons affects the total energy and momentum of the solitons much larger in the nonlinear part than in the linear part .The results will provide the theoretical reference on the nonlinear phenomenon in ultrapowerful laser plasma.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
本文从偶极子辐射场的Heaviside-Feynman表达式出发,用经典的电动力学方法推导了考虑内禀磁矩影响后的相对论电子辐射频谱分布的表达式,并对做匀速圆周运动的极端相对论性电子的同步辐射,计算了两个偏振方向上的考虑磁矩修正后的辐射谱.计算结果表明对于特征频率为ωc的同步辐射,如果ˉhωc 10 keV,内禀磁矩对辐射的修正是可观的.通过同步辐射的内禀磁矩修正,本文讨论了电子束极化度与辐射场偏振度的依赖关系,并基于此关系提出一种测量电子束极化度的新方法.
An explicit expression for the spectral distribution of the radiation energy from a relativistic electron with a magnetic moment is derived. Consequentially for an extreme relativistic electron moving along a planar circular orbit, the spectral distributions of synchrotron radiation in σ- and π- polarization are calculated including the modification from electron’s magnetic moment. It is shown that for the synchrotron radiation with high critical frequencyωc with ˉhωc 10 keV, the modification may be considerable. The relationship between the polarization of synchronous electrons and radiation fields is obtained, and thus the information about spin polarization of electron beam from measuring the polarization of radiation fields is provided.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
从科学哲学视角看，“主体间性”包括六个方面：物理学研究的“物理学家眼光中的自然”；库恩的“集团合理性”；从“纽拉特之船”看科学的经验基础；从实在论与非实在论之争看主体间性；按照戴维森“三角测量”的观点来理解科学实验；从相对论看主体性、主体间性与客观性三者的统一。
From the philosophy of science,“intersubjectivity”includes six aspects:nature in the eyes of physical scientists;Thomas Kuhn′s “community rationality”;experience basis of science in the vi-sion of “Neurath′s Boat”;intersubj ectivity from the debate between Realism and Antirealism;under-standing scientific experiments in terms of Davidson′s “Triangulation”;unification of subjectivity,in-tersubjectivity and objectivity in terms of Relativity.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
黑洞暂现源是中心天体为恒星级黑洞的X射线双星,其X射线辐射是暂态的。目前已经得到认证的黑洞暂现源总共有17个,黑洞候选体有32个。黑洞暂现源中普遍存在准周期振荡(QPO)现象,按照频率的不同可以将黑洞暂现源中的QPO分为低频QPO和高频QPO两类。相对论性进动模型是现阶段解释低频QPO现象最成功的理论模型,除此之外径向振荡模型和盘振荡模型也可以解释某些低频QPO现象;而高频QPO现象可以用相对论性共振模型以及盘振荡模型解释。研究黑洞暂现源QPO现象有利于更好地了解吸积的本质以及内吸积流的性质,同时为研究黑洞周围强引力场效应提供了窗口。此外,存在一些与QPO现象有关的经验关系,对这些经验关系的研究可以对现有的理论模型提出限制条件。
Black hole transients (BHTs) are X-ray binaries in which the central compact object is believed to be a black hole. The X-ray emission of these systems is transient, which is characterized as long periods of inactivity interrupted by short outbursts. Up to now, along with 32 black hole candidates, 17 X-ray binary systems are identified as black hole transients. QPOs are general features in almost all black hole transients. The QPOs in BHTs can be divided into two subclasses in terms of frequency: low-frequency QPO ranging from a few mHz to 10 Hz and high-frequency QPO ranging from 40 Hz to 450 Hz. Among the most promising models for low frequency QPO are the one that invokes Lense-Thirring (LT) precession. The global disk oscillation model and radial oscillation model are also considered to interpret some low frequency QPOs. Meanwhile, several models have been proposed to interpret the high-frequency QPO, such as the relativistic resonance model and disk-oscillation model. The study of

[ 可能符合您检索需要的词汇 ]

进入期刊文章
重味介子在强子谱研究中扮演着特殊的角色，它是含重夸克的最简单的强子体系。借助相对论性势夸克模型计算了各种D介子基态以及S波低激发态的能量，结果表明除了耦合道引起的质量移动外，赝标重味介子与矢量重味介子的质量分裂可归因于重轻夸克间的自旋耦合能。
Heavy flavour mesons play a special role in the study of hadron spectrum , w hich are the simplest hadronic system that contain heavy quarks . In this paper , T he energy spectrum of a variety of D mesons in their ground state and low‐lying excited S waves are calculated based on relativistic potential quark model .In addition to mass shift due to channel coupling ,the mass splitting between heavy flavored pesudoscalar mesons and vector mesons arise from spin‐spin interaction between quarks .

[ 可能符合您检索需要的词汇 ]