calendrical

calendrical

1. A few artifacts and some Arabic texts suggest that simpler geared calendrical devices had existed, particularly in Baghdad around A.D. 900.

一些古代器物及阿拉伯的古籍表明，公元900年，在巴格达地区也曾出现过一些齿轮相对简单些的天文计算装置。

2. The Chinese zodiac refers to a pure calendrical cycle;there are no equivalent constellations like those of the occidental zodiac.

中国星相是一种完全的月历循环,不像西洋人的星像有对应的星图。

3. ancient calendrical science

古历法

4. The main purpose of the intercalary month is to correct for deviations of the calendrical year from the astronomical year.

闰月的主要目的是纠正（中国农历）历年和天文年之间的偏差。