大多数情况下，人造卫星自观测者的西方升起，经过中天，然后在东方落下，虽然越极轨道人造卫星可以在天空的任意部分升起和落下！
In most cases, the satellite will rise in the west, cross the observer's meridian, and set in the east, although satellites in a polar orbit can rise or set in any part of the sky!
大气层外极薄的微粒层会撞击进入减慢轨道物体的速度。
A whisper-thin veil of molecules at the atmosphere's outer reaches bumps into and slows down orbiting objects.
2008年1月21日，以色列的首颗24小时、全天候、高分辨率雷达卫星TechSAR由印度的极轨卫星运载火箭(PSLV)送入轨道。
Israel's first 24-hour, all-weather, high-resolution radar satellite, dubbed TechSAR, was inserted into orbit Jan. 21 by an Indian Polar satellite Launch Vehicle (PSLV).
现在你的眼睛就是在模拟地球处在它轨道的两极而且你的手指就是临近的恒星。
Your eyes are simulating the position of the Earth at the extremes of its orbit and your finger, the nearby star.
通行的原子标志是直白的：几个点循极细的轨道环绕着一个黑点。
The popular symbol of the Atom is stark: a black dot encircled by the hairline orbits of several other dots.
NASA的月球勘测轨道飞行器历时六个月，拍摄了1,700张月球极区的照片。
Over six months, NASA's Lunar Reconnaissance Orbiter took 1,700 pictures of the moon's polar region.
地球将处在轨道的另一极并且许多临近的恒星在空中看起来好像有些偏移。
The Earth will be at extremes of its orbit and so any nearby stars will seem to have shifted a tiny bit in the sky.
其中许多行星的轨道距其主恒星极近，因此这些行星是炽热的。
Many of them orbit precariously close to their parent stars, so they scorching hot.
当车架卧式放倒且其靠背与地面平行时，可以极省力地将电缆滚筒沿滚筒轨道推滚到车架上。
The cable creel can be easily pushed to the frame along rail when the frame is arranged horizontally with the backing parallel to the ground.
工程师们为探测器设定了一个特定的绕木轨道，经过木星的极区，从而尽可能减少与环木星赤道辐射带的接触时间。
Scientists designed a path that takes Juno around Jupiter's poles, spending as little time as possible in the sizzling radiation belts around Jupiter's equator.
用于天气预报的卫星的轨道会通过地球的两极。
Satellites used for weather forecasting pass over the two poles of the Earth.
极地轨道卫星经两极上空环绕地球运行，期间不断拍摄地球上不同的地区。
Polar-orbiting satellites revolve around the Earth along paths roughly passing over the poles. As they move, they obtain images of different parts of the Earth.
这种方法可直接获得向径、轨道速度等参数随时间或极角（绕地心的转动角）的变化，便于分析轨道转移与逃逸运动，有助于飞行使命与运动轨迹的设计。
Radius and orbital velocities can be directly expressed as functions of time or polar angle, which is helpful for designing flight mission and motion trajectory.
利用光子的闭合轨道理论和偶极成像的方法，研究了两个相互作用的原子在电介质界面附近的自发辐射率。
The spontaneous emission rate of two interacting excited atoms near a dielectric interface is studied using the photon closed-orbit theory and the dipole image method.
利用光子的闭合轨道理论和偶极成像的方法，研究了两个相互作用的原子在电介质界面附近的自发辐射率。
The spontaneous emission rate of two interacting excited atoms near a dielectric interface is studied using the photon closed-orbit theory and the dipole image method.
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