查询词典 sidereal time

A sidereal day is shorter than a mean solar day by 3 minutes and 56 seconds.

恒星日比平均太阳日短三分五十六秒。

The sidereal year ,ie 365 days,6 hours,10 minutes

恒星年(即365天6小时10分)。

Tropical year , and sidereal year are two different concepts .

回归年与恒星年是不同的两个概念。

Unfortunately, here on planet Earth, with its decidedly undecimal sidereal year of 365-and-a-quarter days, that is just not going to happen.

但是不巧的是，在地球这个行星星球上，这种事不会发生，因为"恒星年（由365又1/4天所组成）是非十进制的"这一事实是确凿无差的。

The sidereal year is not used to construct a calendar.

恒星年不用于编制年历。

Hence the full moon cycle can be defined such that the lunar precession cycle is the beat period of the full moon cycle and sidereal year.

因此，满月周期可以和月球的进动周期整合，定义出满月周期和恒星年的关系。详见月球进动。这句应该也有问题。

There are people believe that the ancient Chinese form was originally a concept-day geodetic instruments, Spring and Autumn Period there is a instrument for the observation of astronomical tables, people standing tree as a pole in order to determine the length of the sun's shadow position, solar terms, and thus to measure the star, observable sidereal year cycle, the ancient pre-construction in the construction, but also as a method to take positive positioning.

还有人认为，古代的中国形式的概念最初是天大地测量仪器，春秋有一个表的天文观测仪器，人们站在一个极树，以便确定太阳的阴影位置长度，节气，从而测量恒星，观测恒星年周期，古代前在建筑施工，但作为一种方法也采取积极的定位。

2564 Days - a sidereal year .

三百六十五点二五六四天-恒星年。

A slow westward shift of the equinoxes along the plane of the ecliptic , resulting from precession of Earth s axis of rotation , and causing the equinoxes to occur earlier each sidereal year .

分点岁差：指二分点沿着黄道平面向西的缓慢移动，它由地球中轴旋转的岁差而造成，并能导致二分点每个恒星年都提早出现。

A sidereal year.

一恒星年

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。