您要查找的是不是：
- mean tropical year 平回归年
- The tropical year is the interval between two transits of the mean Sun through the mean Equinox. 回归年是平太阳两次通过平春分点的时间间隔。
- Tropical year, and sidereal year are two different concepts. 回归年与恒星年是不同的两个概念。
- The climate was by no means tropical. 那里的气候完全不是热带性的。
- During a tropical year the sun moves from Vernal Equinox to Vernal Equinox. 在一个回归年内，太阳从春分点转回到春分点。
- A tropical year is a measurement of time from one winter solstice to the next. 回归年是指从一年冬至到下一年冬至的时间段。
- The tropical year is a phenomenon of the precession of the equinoxes in astronomy. 太阳年是天文学里的岁差现象。
- Precession causes the stars to change their longitude slightly each year, so the sidereal year is longer than the tropical year. 基于这种动机下，国际天文联合会选择了最容易开发和利用的理论。
- He also distinguishes between tropical year and sidereal year, the first time the introduction of calendar precession, measured precession for 45 years, a time difference in November. 他还区分了回归年和恒星年，首次把岁差引进历法，测得岁差为45年11月差一度。
- The tropical year is the interval between two transits of the mean Sun through the mean equinox 回归年是平太阳两次通过平春分点的时间间隔。
- Tropical plants abound in the jungle. 丛林中有大量的热带植物。
- Spending too much now will mean a shortage of cash next year. 现在花钱过头，来年就要缺钱。
- Do you mean say we are met for a thunder storm? 你肯定我们会遇到一场雷雨？
- Xing Yunlu's Determination of the Length of Tropical Year Revisited 邢云路测算回归年长度问题之再研究
- I feel mean for not doing more for my son. 我对没为我儿子多做点事而感到惭愧。
- Defeat in this election would mean he was done for. 这场选举的失败意味着他政治生涯的结束。
- These tropical flowers have bright colors. 这些热带花卉颜色很艳丽。
- By power we mean the rate of doing work. 我们说功率就是指做功的速率。
- Is Singapore a tropical country? 新加坡是热带国家吗？
- I have no conception of what you mean. 我想不出你的意思是什么。
