1.
intraplanetary space
行星轨道与太阳间空间
2.
The orbits of these stars were perturbed by the passings of a comet.
这些行星轨道被扫过的彗星打乱了。
3.
Planets roll on their courses.
行星在轨道上运行。
4.
circum earth orbit
地球卫星的环行轨道
5.
orbit of artificial earth satellite
人造地球卫星运行轨道
6.
A satellite stays in orbit,
卫星沿着轨道运行，
7.
The stars in their courses, ie the way they appear to move
在轨道中运行的星球
8.
Either of two points at which the orbit of a satellite intersects the orbital plane of a planet.
轨道交点卫星的轨道与行星的轨道面相交的两点中任何一点
9.
Mercury and Venus are inferior planets.
水星是在地球轨道内侧的一颗行星。
10.
Mars, Venus and the other planets move in eccentric orbits.
火星、金星及其他行星沿不正圆的轨道运行。
11.
Multipath Channel Estimation of LEO CDMA Satellite Downlink
低轨道CDMA卫星下行链路多径信道估计
12.
Mars and Jupiter are the closest in of the superior planets.
火星和木星是最靠近地球轨道外侧的行星。
13.
(of planets,etc)moving in an eccentric orbit
（指行星等）在不正圆的轨道上运行的.
14.
First, we know that the planets all orbit close to the earth's orbital plane, the ecliptic.
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。
15.
minimum orbital unmanned satellite
最低轨道运行的不载人卫星
16.
Galaxies as a rule associate into orbiting clusters and groups.
星系通常围着（系）簇或群组而轨道绕行。
17.
the satellite would not circle the planet,
卫星就不会再沿轨道运行了，
18.
The satellite is orbiting around the earth.
卫星正绕着地球轨道运行。