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1·What is the orbital period of the sandwich after the throw?

被扔的三明治的，轨道周期是多少？

2·Each year their orbital period shrinks by 0.3 milliseconds.

每年它们的轨道周期会缩短0.3毫秒。

3·If the stars were spiraling together the orbital period would shorten, as observed.

正如所观察的那样，两颗星一起盘旋时轨道周期将会变短。

4·As a result, Brown and his team will have to wait until fall to measure the expected shortening of the orbital period.

结果就是，布朗和他的研究团队只有等到今年秋天才能测量出它们的公转周期到底减少了多少。

5·The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

第三定律（周期定律）：各个行星绕太阳公转周期的平方和它们的椭圆轨道的半长轴的立方成正比。

6·We know the period, we know where apogee is, we know where perigee is, - we know the orbital period — anything we want to know.

知道周期，知道远地点，和近地点在哪里，知道轨道周期-，知道了想知道的一切。

7·In this paper, 16 semi-detached binaries of increasing orbital period were chosen to be to investigated of the mass exchange rate.

对16颗旋转周期增加的半相接双星的质量交换速率进行了研究。

8·The planet orbiting Kepler 10, by contrast, has an orbital period of a mere 20 hours and is so dense that it is probably made of iron.

相比之下在开普勒-10轨道中发现的那颗行星其轨道周长只有20小时，而且密度很高以至于研究员估计行星内部是由铁组成的。

9·Particularly, the method of coverage orbit design is given in view of the orbital period deviation, which is based on recursive orbit.

特别是，以循环轨道为基础，考虑轨道周期的误差，给出覆盖轨道的设计方法。

10·With a noninteracting pair, astronomers can precisely measure the change in the orbital period of the stars as they spiral toward each other.

但是对于相互间不发生交互的双星系统，当它们旋转着接近对方时，天文学家就可以精确地测量出其公转周期的改变量。