| 1. | Moreover , the time for charon to go around pluto is the same as the rotational period of pluto . therefore , charon is a
此外，查戎的公转周期和冥王星的自转周期一样，所以它是一颗 |
| 2. | The rotational period of jupiter is about 10 hours , and such a high velocity flattens jupiter at the two poles
木星自转一周约需10小时，这样高的自转速度令木星赤道隆起成为椭圆形。 |
| 3. | Is 29 . 5 days . interestingly , the rotational period of the moon relative to the sun is exactly the same as the synodic period
盈亏月。月球的自转周期刚好和它的绕地公转周期相等，这种情形称为 |
| 4. | For the evolution stars with age less than 109 years , stellar magnetic activity and rotational period decrease with stellar age ; for the stars with age larger
而晚型演化恒星不论是演化恒星的磁活动还是自转周期以恒星年龄10 ”年为分界点表现出随年龄不同的规律。 |
| 5. | There have good linear relativity between stellar magnetic activity , rotational period and stellar age of ms stars , but this relativity of evolution stars has different action
在第七章中，我们讨论了晚型恒星的自转周期的分布、恒星年龄对晚型恒星磁活动的影响以及晚型恒星的角动量演化。 |
| 6. | In order to select the proper objects to observe and analyze , we made a statistic study on the rotational period , and selected the asteroids with diameter of about 125km as the objects
在对现有自转速率的小行星进行统计分析时发现，直径在100 ? 150公里之内的小行星的自转速率具有较为特殊的性质，这一特性与小行星的碰撞经历有关。 |
| 7. | Due to their large masses , their rotational periods are very regular . we can specify the periods of some pulsars up to more than ten decimal places . this allows us to study the small disturbances around the star
由于中子星非常沉重，所以它的自转周期非常规律，有些中子星的脉冲周期可以准确至小数后十个位，因此，就算中子星出现轻微的异动，天文学家亦可以观察得到。 |
