| 1. | Standard rotational - velocity star
自转速度标准星 |
| 2. | Equatorial rotational velocity
赤道自转速度 |
| 3. | Most importantly , they observed that the rotational speed of this star slows down at a rate of 2 . 6 x10
更重要的是，据观测所得，这颗中子星的自转速度每年以2 . 6x10 |
| 4. | In seven years , a timing tweak meant to make up for changes in the earth ' s rotation
此次全世界调时距上次已有7年时间，而调时的主要原因则是地球自转速度的变化。 |
| 5. | 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。 |
| 6. | Therefore soon after their supernova birth , their rotational speed will become so low that they stop to emit electromagnetic pulses
因此，超新星爆发后不久，磁星的自转速度会变得非常缓慢，因而停止发放电磁脉冲。 |
| 7. | Scientists are delaying the start of 2006 by the first " leap second " in seven years , a timing tweak meant to make up for changes in the earth ' s rotation
科学家们把2006年的到来推迟了一“闰秒” 。此次全世界调时距上次已有7年时间，而调时的主要原因则是地球自转速度的变化。 |
| 8. | A leap second is added to keep uniform timekeeping within 0 . 9 second of the earth ' s rotational time , which can speed up or slow down because of many factors , including ocean tides
增加这一闰秒是为了保证协调世界时原子时和地球自转时间天文时之间的差距控制在0 . 9秒以内，地球自转速度的加快或减慢受到很多因素的影响，潮汐就是其中之一。 |
| 9. | A leap second is added to keep uniform timekeeping within 0 . 9 second of the earth ' s rotational time , which can speed up or slow down because of many factors , including ocean tides
增加这一闰秒是为了保证协调世界时（原子时）和地球自转时间（天文时）之间的差距控制在0 . 9秒以内，地球自转速度的加快或减慢受到很多因素的影响，潮汐就是其中之一。 |
| 10. | Although it is possible to have a negative leap second - that is , a second deducted from coordinated universal time - so far all have been add - ons , reflecting the earth ' s general slowing trend due to tidal braking
尽管也有实施负闰秒制从协调世界时中扣除一秒的可能，但迄今为止，只有加，没有减，这说明由于受潮汐减速的影响，地球的自转速度大体上呈减慢趋势。 |
