It also shows trackage and operators for Canada and Mexico.

它还显示加拿大和墨西哥轨道和经营公司。

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宇宙飞船上!

They put a weather satellite into orbit round the earth.

他们把一颗气象卫星送入环绕地球轨道。

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

火星、金星及其他行星沿不正圆轨道运行。

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

这个人造卫星轨道，其最远点在离地球200英里地方。

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卫星是1963航暨太总署发射传输卫星.

Streetcars rumble down Tokyo's Arakawa tramline.

有轨电车隆隆通过东京荒川区轨道。

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

太阳神八号是将一艘登月艇纳入绕月球轨道一项试验。

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

人造地球卫星轨道由于大气阻力和地球引力场等因素摄动,其形状和近地点位置将不断改变。

It is a tiny joyrider from the rubble stream surrounding the solar system that broke free and orbits the sun in a tilted, elongated orbit.

它是从围绕太阳系而又自由浮动一堆剩余物中游走出来一颗星。它体积微小，以倾斜、细长轨道围着太阳运转。

The orbiting Discovery crew on the way Sunday to rewire the International Space Station first had to make sure the shuttle's heat shield(heatshield) wasn't damaged during lift-off.

星期日，负责发现号轨道工作人员在跟际间站接轨前，必须先确定热障在起飞时没有损坏。

But they were a little sad, because it was so long between times that they got to be near each other, what with orbita mechanics being what they are and all.

但是它们也有一点点伤感，因为每颗星星都有各自运行轨道，相互靠近需要太长太长时间。

In this paper, a new broken rope protection device for incline tramroad vehicle was stated.The design was discussed in this cuniform increase power safety device of breakage rope and test was done.

摘要叙述了一种新型倾料轨道运输车断绳安全保护装置―楔形增力断绳安全装置工作原理，讨论了装置设计计算，并结合实例进行了试验。

(1) No person shall interfere or meddle with or move in any way any of the Company's mobile equipment or trucks, or make use of its tramlines except with the permission of an official of the Company.

(1)除经公司职员准许外，任何人不得以任何方式干扰或搞弄或移动公司任何流动设备或卡车，或使用公司电车轨道。