In automatic mechanism selection system based on orbit, orbit characteristics and dimension parameters of key orbit segments are momentous for selecting mechanisms.

基于轨迹的机构自动化选型系统中，轨迹特征及关键轨迹段尺寸参数是选择机构的重要依据。

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This meant the Apollo Eight astronauts could fire the rocket that would send them from Earth orbit toward the moon.

VOA: special.2009.07.08

You see, the quantum condition, by putting quantization into the moangular mentum it is propagated through the entire system. Orbit dimensions are quantized.

你们看，量子条件，通过把,角动量量子化，它就能在这个系统中进行传播,同时轨道大小也被量子化。

麻省理工公开课 - 固态化学导论课程节选

The radius of the orbit, the energy of the system and the velocity of the electron, I am just going to present you the solutions.

是轨道的半径，系统的能量,以及电子的速度，我接下来会给你们讲解其方程的解法。

麻省理工公开课 - 固态化学导论课程节选

But unlike Iridium's 66 low-orbit birds, Astrolink will cover the earth with only four high-orbit geostationary fliers.

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Before that it was in an orbit that went from the orbit of Jupiter out past the planet Uranus.

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Factors that could cause actual results to differ include: in-orbit test or satellite failures, performance degradation, in-orbit risks and anomalies, or improper orbital placement of ViaSat-1.

ENGADGET: ViaSat-1 sends its first words through the stratosphere to cooing stateside relatives