The mass was calculated by timing the orbit of Eris' moon Dysnomia.

通过对厄里斯的--戴丝诺米娅运行轨道计时后计算出了厄里斯的质量。

A plane orbited over the landing field.

有一架飞机在机场上空盘旋。

The earth orbits the sun once every 365.25 days.

地球每365.25天绕太阳轨道一圈。

Mars, Venus and the other planets move in eccentric orbits.

火、金及其他行沿不正圆的轨道运行。

They put a weather satellite into orbit round the earth.

他们把一颗气象送入环绕地球的轨道。

Let's pretend we're on the spaceship orbiting round the earth!

让我们假装是在沿轨道绕地球运转的宇宙飞船上!

Our satellite itself will orbit around the moon for a period of two days.

我们的绕月球运行两天的时间。

The orbit of the artificial satellite has an apogee of 200 miles from the earth.

这个的轨道，其最远点在离地球200英里的地方。

Mercury orbits the Sun.

水环绕太阳运行。

The repeated thrust applications at apoapsis would raise periapsis from inside to outside the stationary orbit.

重复在远心点施以推力，会近心点由同步轨道内提升到同步轨道外。

Also, as our sun orbits the galactic center it may sweep through areas of interstellar dustiness.

同样的，因为太阳位于重力的中心，它可能会清除有际尘埃的区域。

It orbits an inhospitable ice world named Orto Plutonia, which was a protectorate of the Pantorans.

它围绕一颗不适宜居住的冰冻球奥托普卢托尼亚旋转，奥托普卢托尼亚是潘托拉的保护地。

The first satellites placed in geostationary orbit were the synchronous communication(SYNCOM)satellites launched by NASA in 1963.

第一个放置在对地静止轨道的是1963年美国航空暨太空总署发射的同步传输.

Apollo 8 was a test in which an Apollo moonship was put into orbit around the moon.

太阳神八号是一艘登月艇纳入绕月球轨道的一项试验。

John Glenn, the first American to orbit the earth, carried pureed applesauce in squeezable tubes on his initial space flight.

3．约翰?格伦，第一位绕地环行的美国宇航员，在他的首次飞行时带有软管包装的苹果酱。

The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.

地球的轨道由于大气阻力和地球引力场等因素的摄动,其形状和近地点位置不断改变。

Abstract.The first orbit maneuver of lunar orbit insertion (LOI) must be implemented at the first perilune of the spacecraft flight to the moon.

月球捕获控制第一次制动必须在飞向月球的第一近月点完成。

After completing lunar swingby maneuvers, the A spacecraft is intended to orbit the Sun "Ahead" of planet Earth, and the B spacecraft "Behind".

在完成对探测器变轨后，A飞船在地球的前方绕行太阳，而B飞船则在"后方"绕行。

Galileo was forced to recant his assertion that the earth orbited the sun.

伽利略被迫放弃地球围绕太阳转的断言。

Dire Pithi Wrecker, Plunderer as well as Dire Guristas Wrecker and Plunderer were having orbit range problems for guns and missile. This has been fixed.

修正了灾难波希肇事者、灾难波希豪夺者、可怕的古斯塔肇事者的导弹环绕距离错误。