自转

These are unevolved, slowly rotating non-active stars from a CORALIE catalogue.

这些都是来自CORALIE星表中演化稳定、低自转率、非活动性的恒星，它们已被高精度光谱仪跟踪了很长一段时间来确定其是否拥有行星系统。

This paper studied the relationship between impulsive moment of radial tidal current and Alai phenomena, and concluded that: M acting on the earth's axis inspires Chandler wobble; the change of M depends on the interaction of the water, tidal force and the effects of the earth's rotation; under certain conditions, M changes dramatically during eclipse, which makes the amplitude of Chandler wobble change in the form of pulse.

本文研究了径向潮流冲量矩M与阿莱现象的关系，得出的结论是：M作用于地轴激发了Chandler摆动；M的变化取决于海水、引潮力和地球自转效应的相互作用；日食或月食期间，在一定的条件下，M变化的非常剧烈，引起Chandler摆动振幅脉冲式的变化，进而引起地球纬度的变化，最终导致地球表面重力加速度的变化；这种变化可以通过傅科摆摆动平面角速度的变化或重力计的示数变化反映出来。

The sun spins about once every 25 days, gradually deforming its magnetic field.

太阳每50天自转一周，逐渐使它的磁场变形。

The earth is a complicated system, and it has been continuously moving differentiating and evolving since it had been formed. Not only has the earth layering structure, but it has vertical movement of materials. The movement is prompted by the mechanism of force and heat of the centrifugal force to be formed by the rotation and revolution of the earth, and difference of temperature, pressure, density, viscosity and velocity in the between core and mantle, and radioactive heat, et al. The expressive means of the mechanism of force and heat are the precesses of mantle plume and mantle fluid. Not only are ore-materials of core and mantle carried directly into crust, but ore-materials of crust are activated and accumulated into proper location by the mantle fluid having the supercritical nature.

地球是一个复杂的系统，自形成以来，一直处于不停地运动、分异和演化过程；它不仅存在着圈层结构，而且伴随其自转和公转的离心力，以及核幔间的温度差、压力差、密度差、粘度差、速度差和放射性蜕变热等动热机制，同时存在着以地幔柱和地幔流体作用方式的物质垂向运动；这一过程，不仅直接向地壳带入核幔成矿物质，而且通过流体自身的超临界性质，将沿途活化已有初步富集的成矿物质转移至地壳适宜部位集中成矿。

In addition, if the star rotates about its axis, that can be problematic.

此外，如果恒星是围绕其轴自转的，也会产生问题。

The earth rotates once every 24 hours.

地球每24小时自转一次。

Earth rotates on its axis once every 24 hours.

每24小时地球围绕它的轴自转一周。

Mercury rotates on its axis once every 59 days.

水星围绕它的轴自转一周要59天。

The earth seems to be at rest ,but in fact it rotates on itsaxis and revolves around the sun.

地球好象是不动的，但实际上，它绕轴自转并围绕太阳运行。

In addition, the correlation between mass variation and spins of black holes is discussed.

此外还讨论了在吸积过程中，黑洞质量的相对变化与黑洞自转的相关性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。