When Earth's orbit is more elliptical, Earth is actually closer to the sun during part of the year.
当地球的轨道更接近椭圆时，地球实际上在一年的一部分时间里更接近太阳。
Under the control of the Sun's gravitational force, each planet maintains an elliptical orbit and all of them travel in the same direction.
在太阳引力的控制下，每个行星都维持在一条椭圆形的轨道上，并按照相同的方向移动。
However, if an eclipse occurs while the Moon is on the far side of its elliptical orbit, it appears smaller than the Sun and can't completely cover it.
但是如果日食出现在月球处于它的椭圆轨道远地点的时候，它显得比太阳小而无法完全遮盖住太阳。
The Moon's orbit is elliptical, meaning it does not follow a circular but rather an oval path.
月球的轨道是椭圆的，因此，就意味着它不是以正圆的方式环绕地球公转，而是椭圆。
I now go into an elliptical orbit because the new velocity is no longer the right velocity for a circular orbit.
我现在要进入一个椭圆形轨道，因为新的速度已经，不是圆形轨道中的速度。
Sometimes a single planet with an elongated, or elliptical orbit can look the same as two planets that trace perfect circles around their stars.
有时候如果一个行星的轨道是拉长的或是椭圆的，那就有可能被当做轨道吻合的两颗行星。
As a result it appeared some 14 percent larger and 30 percent brighter than a Full Moon near apogee, the most distant point in the elliptical lunar orbit.
结果，这导致了比起运行到远地点(椭圆形月球轨道的最远端)时的满月，那天的月亮面积增大14%，亮度增加30%。
But the general solutions call for a elliptical orbit.
但是，一般的解决方法，还是需要一个椭圆轨道。
The Moon's elliptical orbit means its distance from the Earth is not constant.
月球椭圆型的轨道意味着它到地球的距离是变化着的。
It orbits its star every 4.7 days, in a moderately elliptical orbit at a mean distance of only 0.04 AU (one tenth of Mercury's distance from the sun).
它每4.7天环绕恒星一周，其轨道为一个适度的椭圆，平均距离仅0.04个天文单位(为水星距太阳的十分之一)。
The orbit of the earth around the sun is eccentric because the orbit is slightly elliptical and so has effectively has two centres (neither of them the centre of the sun).
地球环绕太阳的公转轨道是偏心的，这是因为地球的公转轨道稍微呈椭圆形，所以这个轨道实际上就有两个中心（这两个中心都不与太阳的中心重合）。
And so what's going to happen — I'm going to get an elliptical orbit like so, whereby 2a must be larger than 2r because my total energy is larger.
这就是将要发生的-，我将要进入一个椭圆形轨道，在这里，2a肯定要，比2R大，因为总能量增大了。
And it shifts its orbit from being roughly circular to more elliptical on a 100,000-year cycle.
并且它的变轨周期是10万年，从近似的圆变得更椭圆。
The sun makes this shape over a year because Earth rotates on a slightly different axis than the sun, and our planet also travels on an elliptical orbit.
太阳一年内的轨迹形成这种形状是因为地球围绕着与太阳略微不同的轴旋转，而我们的地球也沿着椭圆形轨道运行。
This is because of the Moon's orbit around Earth which is oval or elliptical in shape.
这是因为月球环绕地球的轨道是卵形的或者椭圆形的。
Kepler went on to show that an elliptical orbit is sufficient to explain the movement of the other planets and to devise the laws of planetary motion that Newton built on.
接着开普勒证明了这个椭圆轨道也能很有效解释其他行星的运行轨迹。然后他提出了行星运动定律，牛顿定律就是以此为理论基础的。
Also that velocity, v, in that equation number five will also change with time because it's an elliptical orbit.
同样的，第五个方程序，中的速度同样，会随时间改变，因为这是椭圆形轨道。
Due to the moon's titled and elliptical orbit around Earth, the moon seems to return to the same place in the sky 51 minutes later each day, on average.
因为有卫星的头衔，而且沿椭圆形轨道环绕地球运行，月亮似乎每天平均51分钟返回到天空的同一地点。
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。
A recently-discovered dwarf planet, named Sedna, has an extra-long and usual elliptical orbit around the Sun.
一颗近期被发现的褐矮星“赛德娜”(Sedna)有一个超长的椭圆形的绕太阳的轨道。
Mercury's orbit is highly eccentric, meaning it's path is elliptical.
水星的轨道非常古怪，这意味着它的路径是椭圆形。
Thee moon's orbit around Earth is slightly elliptical - it does not move in an even circle.
月球的绕地轨道有点偏椭圆- - - - - - -它甚至并不是绕圈运行。
If the satellite has an elliptical orbit the result is a spiral wave a miniature version of the pinwheel pattern of our galaxy.
如果卫星的轨道是椭圆的，就会产生螺旋波，就像是银河系纸风车形状的缩影。
Mistakenly believe that doing elliptical motion of the satellite perigee and apogee of the orbit radius of curvature different.
错误地认为做椭圆运动的卫星在近地点和远地点的轨道曲率半径不同。
With its original elliptical hands this clock changes shape like a satellite changes orbit.
凭借其原来的椭圆形手这个时钟的改变形状像一个卫星改变轨道。
The energy and the elliptical orbit of the electron in hydrogen-like atom are derived from formula inverse square attraction and Sommerfeld's quantized conditions.
利用平方反比引力给出的关系式和索末菲量子化条件推导出类氢原子的椭圆轨道和能量。
A method of area target's raw data simulation of spaceborne SAR based on elliptical orbit is presented.
提出了一种基于椭圆轨道的星载sar面目标原始数据模拟的方法。
A regional satellite navigation system which is made up of geosynchronous satellites and synchronous satellites with elliptical orbit is proposed.
提出了一种用静止卫星和同步椭圆轨道卫星构造的区域卫星定位系统。
The moon's orbit is elliptical rather than perfectly circular, so as the moon moves around the Earth it is sometimes a little bit closer and sometimes a bit further away from us.
月亮绕地球运行轨道为椭圆形而非正圆。所以月亮绕地球运动的过程中，有时月亮会离地球近一些，而有的时候离地球远一些。
The moon's orbit is elliptical rather than perfectly circular, so as the moon moves around the Earth it is sometimes a little bit closer and sometimes a bit further away from us.
月亮绕地球运行轨道为椭圆形而非正圆。所以月亮绕地球运动的过程中，有时月亮会离地球近一些，而有的时候离地球远一些。
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