地球沿椭圆形轨道运动。
多年来，牛顿一直对月球和行星轨道运动的成因好奇。
For years Newton had been curious about the cause of the orbital motion of the moon and planets.
给出了计算卫星姿态运动和卫星轨道运动的计算公式；
The formular for calculating satellite attitude motion and method for calculating satellite motion on orbit are discussed.
满壳层中电子的轨道运动所产生的磁场也被成对地抵消了。
The magnetic fields produced by the orbital motions of the electrons in filled shells also cancel in pairs.
旋转，绕转：围绕一个点的轨道运动，尤指区别于绕轴旋转的。
Orbital motion about a point, especially as distinguished from axial rotation.
由此改变玩具沿预定轨道运动的单一模式，增加对使用者的吸引力。
Thereby, the single mode that the toy is moved along predetermined tracks can be changed, and the attraction force to the user can be increased.
月亮永远处于这个小小的椭圆上，而这个椭圆随地球的轨道运动而移动。
The moon at all times lies somewhere on that small ellipse which moves along with the earth in its orbit.
自旋-轨道耦合是电子的自旋磁矩和由轨道运动产生的磁场之间的相互作用。
Spin-orbit coupling is the interaction between the spin magnetic moment of an electron and magnetic field generated by its orbital motion.
自旋-轨道耦合是电子的自旋磁矩和由轨道运动产生的磁场之间的相互作用。
Spin Hall Effect and Spin Current in a Mesoscopic System with Spin-Orbit Coupling;
在LISA上面，这些轨道运动所发出的兆赫兹范围的引力波都可以被探测到。
Here, the gravitational waves emitted from the orbital motion in the mHz range would be detectable.
彗星的准确轨道运动的确定是个复杂而困难的问题，其显著特点是存在非引力效应。
Cometary accurate orbital motion is a complex and difficult problem. Its remarkable characteristic is the presence of the non-gravitational effect.
沿洛拉萨尤轨道运动的一些最小的小行星，是漂浮在莫蒂斯或耶果上空的岩石的再改造。
Some of the smallest asteroids seen orbiting Lola Sayu are re-textured rocks seen floating over Mortis or Iego.
第一定律（轨道定律）：所有行星都沿各自的椭圆轨道运动，太阳在该椭圆的一个焦点上。
The orbit of every planet is an ellipse with the Sun at a focus.
不论你有个很轻的,物体还是很重的卫星,如果它们距离相同且,在轨道运动时间,相同，则速度一样。
Whether you have a very light object or a very heavy satellite, they have the same velocity in orbit if they are at the same distance, and they have the same orbital period.
第一部分介绍了分子马达的生物学研究进展，包括马达的种类、结构特征和沿轨道运动的性质。
In the first part, the biology study evolvement of molecular motor are introduced, including their categories, structure features and motion properties.
天体中有七颗行星的旋转方向与自己的轨道运动方向相同，而金星和天王星则以相反方向旋转。
Seven of the planets rotate in the same direction as their orbital motions, while Venus and Uranus rotate in the opposite direction.
有成千上万枚碎片在围绕轨道运动，可能是老旧的卫星，火箭，甚至过去进行太空漫步的宇航员遗落的工具。
There are thousands of pieces of debris floating around in orbit, bits of old satellite or rocket even tools dropped in the past by space-walking astronauts.
本文讨论了近似模型下，即不考虑轨道运动时，均匀磁场中定域电子能量、波函数、平均值及测不准关系。
In this paper, the power, wave function, average value, and uncertainty relation of localized electronic spin in uniform magnetic field were discussed.
利用现有资料，把观测到的C_4和C_5的运动，分解成射电核心的运动和它们沿着一条共同的轨道运动。
The motions of C4 and C5 are resolved into the core motion and their motions along a common path.
还建立了卫星姿态运动、轨道运动、地球自转、地球曲率、高斯投影等影响下的星载线阵c CD成像模型。
The satellite CCD photograph model under the effects of orbit motion, earth rotation, earth shape and the Gauss map, etc. is also presented.
它们绕轨道运动的方向一致(从太阳北极上看是逆时针方向)，因此，科学家们把冥王星排除在九大行星之外。
They circle the orbital motion the direction to be consistent (from the solar North Pole looked is counter clockwise), therefore, the scientists remove Pluto outside the nine planets.
因此大体上，增大圆盘片和轨道运动的观察只指示有某个质量紧凑的物体，而且有关那个物体的性质说得非常少。
Hence, for the most part, observations of accretion disks and orbital motions merely indicate that there is a compact object of a certain mass, and says very little about the nature of that object.
海啸波长比海洋的最大深度还要大，轨道运动在海底附近也没受多大阻滞，不管海洋深度如何，波都可以传播过去。
Tsunami wavelength than the maximum depth of the ocean even greater orbital motion near the seabed are not subject to much block, regardless of the depth of oceans, waves can be spread over the past.
选择矮行星也有不足：这就是矮行星里的恒星不按照规则的圆形轨道运动，像螺旋星系里的恒星都沿着同一方向运动那样。
The disadvantage: the stars in dwarf galaxies don't move in tidy circular orbits, traveling in the same direction the way stars in spiral galaxies do.
这项分析暗示，或许有比从前预想的更多的潜在“地球”在进行着轨道运动，这一原则将会拓展到还没被开普勒轨道天文台扫描到的地区。
Traub's analysis hints that there may be even more potential 'Earths' orbiting them than previously thought - and that this' principle 'would extend to stars not yet scanned by Kepler.
这项分析暗示，或许有比从前预想的更多的潜在q“地球”在进行着轨道运动，这一原则将会拓展到还没被开普勒轨道天文台扫描到的地区。
Traub's analysis hints that there may be even more potential 'Earths' orbiting them than previously thought - and that this' principle 'would extend to stars not yet scanned by Kepler.
如果我透过窗户看你，物体在一些轨道上，有上升和下降，也有水平运动。
If I see you through the glass, the object is going on some trajectory, which has got both up and down and horizontal motion.
速率只是一个数字，它告诉你，在轨道上，运动的快慢，我的意思是如果你开着一辆车，那么它就告诉你你现在开得有多快。
So, speed is a number. It tells you how fast you are going along your trajectory. I mean, if you're driving in a car, then it tells you how fast you are going.
速率只是一个数字，它告诉你，在轨道上，运动的快慢，我的意思是如果你开着一辆车，那么它就告诉你你现在开得有多快。
So, speed is a number. It tells you how fast you are going along your trajectory. I mean, if you're driving in a car, then it tells you how fast you are going.
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