除了这个，还能得到半径的大小，速度以及周期，假设你在地球上，和这些恒星环绕的，轨道同处一个平面。
And out of this information you get the radius, the velocity and the period, assuming that you are on Earth in the plane of the orbit of the stars.
媒体报道：每24小时环绕地球15圈，有两个月的生命周期的Rassad - 1将会用于拍摄和传输所在行星的图像。
Rassad-1, which orbits the Earth 15 times every 24 hours and has a two-month life cycle, will be used to photograph the planet and transmit images, media reports said.
当Nanosail-D环绕地球运行时，会周期性地闪烁出光亮，使人能（通过仪器）轻易地用眼睛看到。
Glinting in the sunlight as it circles planet Earth, the NanoSail-D solar sail will periodically be bright and easily visible to the eye.
如果这颗恒星年复一年的周期性明暗交替，那么形成足球状壳层多亏环绕它的“拍档”帮助就很有可能正确。
If the star seems to periodically dim and brighten over the year, it's likely that a big orbiting companion helped form the soccer ball-like seams.
在某种程度上，这次仓促的决定归因于空间的时间周期：行星之间的这种排列导致大约每两年的时间才会出现以相对较少能源环绕的“过渡轨道”。
In part, this rush was down to cosmic timing: the alignment of planets that permits an energy-saving "transfer orbit" only comes around every two years or so.
经济周期是指gdp环绕其长期增长率的周期性起跌。
Business cycles are the recurrent fluctuation in GDP around a long-term growth trend.
经济周期是指gdp环绕其长期增长率的周期性起跌。
Business cycles are the recurrent fluctuation in GDP around a long-term growth trend.
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