查询词典 gravitational field

It is found that energy density of static sphere symmetry of gravitational field is negative in the sphere coordinates and their energy density is positive definite in the Cartesian coordinates. This result shows that Einstien-Tolman expression of the energy-momentum pseudo tensor in the Cartesian coordinates have reasonable property.

在球坐标系和直角坐标系下我们用Einstien-Tolman表述计算球对称静态引力场的能量密度，发现在球坐标系下能量密度为负，而在直角坐标系下能量密度为正；这样的结果显示了Einstien-Tolman表述在直角坐标系下有其合理性。

The gravitational field of the visible foreground galaxy breaks light from this distant quasar into four distinct images.

前景星系的巨大引力场使这颗遥远的类星体发出的星光被弯曲成四个不同的影像。

Lynden-Bell and Katzdefine the energy density of gravitational field for a static spherically symmetric metric,and get the conclusion that"All the energy remains outside the black hole".

为了将LBK定义应用于向黑洞过渡的相对论多方球，我们首先讨论了非奇性相对论多方球的静态结构。

Using the theory, we deal with some solutions about the gravitational field surrounding a static spherically symmetric mass and that surrounding a rotating mass, and the results show that some real physical singularities in their black holes can be eliminated.

理论分析表明，该理论可以消除引力场中的物理奇点，并能用标准量子场论方法使引力场量子化。

It shows that an inner relation between the gravitational field around black hole and its thermal radiation must exist.

揭示了黑洞周围的引力场与其热辐射之间存在着必然的内在联系。

Objects in a gravitational field experience a slowing down of time, called time dilation.

物体在一种引力场经历的时间减慢，叫做时间膨胀。

The disturbed interface of a heavy fluid and a light fluid will loss the stability and two fluids will mix turbulently, when the interface is in the gravitational field whose direction is from the heavy fluid to the light fluid or it interacts with a shock wave.

受扰动的两轻重流体的交界面，当处于方向由重流体指向轻流体的有效重力场中或受到冲击波作用时扰动将发展，界面将失稳，两种物质将发生湍流混合。

It is like escaping the gravitational field of a white dwarf and regaining the dissipated coma.

就好像是逃出白矮星的引力场，就好像从昏睡中醒来一样。

The chaotic attitude motion of an asymmetric satellite moving on a Keplerian orbit in the central gravitational field was discussed. The Hamiltonian function of the system can be expressed by using Serret-Andoyer variables.

基於土星卫星上所观察到的混沌运动，研究了中心引力场中Kepler椭圆轨道上非对称卫星的姿态运动，其系统的Hamilton函数可用Serret-Andoyer变量写出。

Part of this precession is attributable to the perturbing gravitational field of the other planets, and part can be explained in terms of the special relativistic increase in mass due to the planet's motion.

这种运动部分是由于其它星体的万有引力场的扰动，还有部分可以用狭义相对论的星体运动引起质量增加来解释。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。