因此，异向介质大爆炸模型中光的路径代表了一个粒子处于空间和时间之中的寿命，这就是物理学家称之为“世界线”的东西。
Therefore, to the big bang model different medium in the light path represents a particle in space and time, this is the life among physicists call "world line" things.
几年前，物理学家认识到，异向介质也可以模拟天文现象，如行星绕恒星，光线被黑洞捕获等。
A few years ago, physicists know that different to medium can also simulated astronomical phenomena, such as planets orbiting stars, light is black holes capture, etc.
简单的物理学定律揭示出，星际介质中的气尘复合体可以进化，先是演化为原恒星，接下去再演化为恒星。
Simple laws of physics suggest, that gas-dust complexes in the interstellar medium may evolve, first into protostars and subsequently into stars.
课程：天体力学，宇宙学，恒星物理学，星系演化，类星体，恒星的分布和运动，星际介质。
Students will complete courses in: celestial mechanics. cosmology. stellar physics. galactic evolution. quasars. stellar distribution and motion. and interstellar medium among possible others.
利用时间平均的坡印亭矢量，给出了在晶体和介质界面发生负折射的条件，与晶体物理学中的分析结果一致。
The time-averaged Poynting vector gives the conditions for negative refraction that occurs at the interface, which are consistent with the analysis in crystal physics.
在物理学上，通常把介质的弹性和黏性抽象成弹簧和阻尼器，通过这两个理想力学模型不同方式的组合可表示成三种基本的黏弹性介质模型。
In physics spring and dashpot areuaually defined representing elastic and viscous medium. Three kinds of basicviscoelastic models are composed of the two mixed mechanics models.
多孔介质中的流动与传热涉及许多工程应用，已经成为当前工程热物理学科最为活跃的前沿研究领域之一。
Flow and heat transfer in porous, which is one of the most interested issues in the engineering thermo-physics, is frequently encountered in many fields of science and engineering.
为了解决复杂介质条件下的成像问题，从原理上简要介绍了近年来广受地球物理学界关注的广义屏深度偏移方法。
To solve the imaging problems in complicated media, the author briefly discusses the principle of generalized screen migration, which is paid close attention recently in the circle of geophysicists.
为了解决复杂介质条件下的成像问题，从原理上简要介绍了近年来广受地球物理学界关注的广义屏深度偏移方法。
To solve the imaging problems in complicated media, the author briefly discusses the principle of generalized screen migration, which is paid close attention recently in the circle of geophysicists.
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