首先，我们知道所有行星的轨道都很靠近地球的轨道平面——黄道面。
First, we know that the planets all orbit close to the earth's orbital plane, the ecliptic.
这是很少见的，因为月亮常常不是在地球轨道平面的上方就是在下方。
It's rare because the moon is usually either above or below the plane of Earth's orbit.
望远镜能搜寻类似于冥神星那样以偏离太阳系的椭圆轨道平面绕太阳运行的矮星。
The telescope can be used to search for dwarf planets like Pluto that orbit the Sun off the solar system's ecliptic plane.
讨论地球扁率对人造地球卫星轨道平面的影响，介绍卫星的太阳同步轨道设计原理。
The effect of the flat rate of the earth on the orbit planes of satellites is discussed and the design principle of sun-synchronous orbit of satellites is introduced.
月球也有另一个主要功用：它的引力使地球的轴心跟地球绕太阳运行的轨道平面保持一定的倾斜度。
Another key purpose that our moon serves is that its gravitational force stabilizes earths axis with respect to earths plane of orbit around the sun.
但2010TK 7可能不会被选为目标星体，因为它的行进偏离地球轨道平面的距离过大，使得抵达它需要耗费大量燃料。
TK7 is probably not the rock of choice, simply because it travels too far above and below the plane of Earth's orbit, which would require a lot of fuel to reach it.
地球是内行星中唯一一个有大卫星的，它的轨道既不在地球的赤道平面上，也不在其他行星所在的平面上。
Earth is the only one of the inner planets with a large satellite, the orbit of which is neither in the equatorial plane of Earth nor in the plane in which the other planets lie.
除了这个，还能得到半径的大小，速度以及周期，假设你在地球上，和这些恒星环绕的，轨道同处一个平面。
And out of this information you get the radius, the velocity and the period, assuming that you are on Earth in the plane of the orbit of the stars.
这是一个巨大的天体，可能是褐矮星[6]，在一个与其他行星平面成一定角度的很长的椭圆形轨道上。
This is a massive astronomical object, possibly a brown dwarf6, which is on a long elliptical orbit around our own sun on an inclined plane to the rest of the planets.
这样一颗行星旋转的平面与我们的不同，并且有可能形成远距双星的轨道。
Such a planet would rotate in a different plane in orientation to our current planet orbits, and probably formed in a wide-binary orbit.
黄道平面是一个假想的平面，理论上它包含了地球环绕太阳运行的轨道。
The ecliptic plane is defined as the imaginary plane containing the Earth's orbit around the sun.
括地球在内）都沿着轨道绕着太阳公转。这代表太阳系平面，学名“黄道”。
the planets, Earth included, orbit around the sun on this celestial sheet.
当地球沿着轨道绕太阳公转的时候，从平面这边的下端开始，以地球为参照物，这也能看成太阳沿着轨道绕我们运转。
We can also imagine that while the Earth orbits around the sun, from down here on the surface, it can look like the sun orbits around us.
它可以解释某些外行星的起源，这些外行星已被检测出它们的运行轨道明显地与它们所围绕恒星的赤道平面相倾斜，蒂斯说。
This could explain the origin of some of the exoplanets that have been detected with orbits significantly tilted with respect to their star's equatorial plane, Thies says.
太阳系内所有的行星成员的运行轨道都趋于这个平面，因为它们都是依据以太阳为轴心的平面轨道运行的。
The planetary bodies of our solar system all tend to lie near this plane, since they were formed from the sun's spinning, flattened, proto-planetary disk.
地球的自转轴与黄道面呈一定角度。黄道面是地球公转轨道所在的一个假想平面。
The Earth's axis of rotation is tilted in relation to the ecliptic plane, an imaginary surface through Earth's orbit around the sun.
但在sigma轨道里，沿着轴向是没有节点平面的，如果我们有个节点，我们就会看到某个地方波函数等于0。
But in sigma orbitals, you have no nodal planes along the bond axis, so if we had a nodal plane here, we'd see an area where the wave function was equal to zero.
采用平面应力弹性理论，对吊车车轮与轨道的接触区尺寸进行理论分析。
The contact zone width of crane wheel with track is analyzed by plane stress elastic theory.
在秋分这一天，地球上赤道正是黄道相交——或者是地球平面轨道环绕太阳，造成我们看到太阳在正西方落下的现象。
And on the day of the equinox, the plane of Earth's equator is intersecting the ecliptic - or plane of Earth's orbit around the sun. So the sun sets due west for all of us.
用变分方法证明了二阶奇异平面哈密顿系统的同宿轨道的存在性。
The existence of a homoclinic orbit for a singular second order planar Hamiltonian system is proved by using variational methods.
采用平面应力理论来分析滚轮与轨道的接触应力问题。
The plane stress theory is applied to analyze the contact stress between cast track and roll wheel.
本文给出了近地卫星平面内轨道维持的一种方法。
A method for low orbit being maintained in the satellite orbit plane is given in this gaper.
试验表明沿滚轮和轨道的侧向存在变形，不满足平面应变问题的条件。
It is found that lateral deformation exists, which implies the condition of plane strain does not fulfill.
系统建立适宜精度标准的平面控制基准，是保障无碴轨道铺设精度指标顺利实现的前提。
So the establishing of(horizontal) control datum with appropriate precision standards systematically is the precondition to make sure the precision of ballastless track laying.
为了控制轮式移动机器人的行走，研制了一种平面涡流式轨道检测用传感器。
To control a wheel mobile robot, a plane eddy sensor which is used to detect road-mark is developed.
为了控制轮式移动机器人的行走，研制了一种平面涡流式轨道检测用传感器。并介绍了该传感器的构造、工作原理及实验结果。
To control a wheel mobile robot, a plane eddy sensor which is used to detect road-mark is developed. it's construction, working principle and experimental results are reported.
进行了基于平面三体模型的登月飞行器轨道控制方法的研究；研究了从近地低轨道到近月低轨道的飞行轨道；
The flight trajectories from low earth parking orbit (LEO) to low lunar parking orbit (LLO) based on a planar three-body model are studied.
研究目的：通过理论研究，对无碴轨道施工平面控制测量的主要技术标准提出适宜的建议。
Research purposes: Through the theoretical research, this paper puts forward some suitable suggestions on the main technical standards of horizontal control survey for ballastless track construction.
为了保证冻结轨道的冻结特性，平面内轨道控制需要对半长轴、偏心率和近地点幅角都控制。
In order to guarantee the characteristics of frozen orbit, in-plane orbit control needs to adjust the semi-major axis, eccentricity, argument of perigee simultaneously.
为了保证冻结轨道的冻结特性，平面内轨道控制需要对半长轴、偏心率和近地点幅角都控制。
In order to guarantee the characteristics of frozen orbit, in-plane orbit control needs to adjust the semi-major axis, eccentricity, argument of perigee simultaneously.
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