perihelion是什么意思
- 英式英标[,pɛrɪ\'hilɪən]
- 美式音标[,perɪ\'hiːlɪən]
英文词源
- perihelion (n.)
- "point at which a celestial body is nearest the Sun," 1680s, coined in Modern Latin (perihelium) by Kepler (1596) from Latinizations of Greek peri "near" (see peri-) + helios "sun" (see sol). Subsequently re-Greeked.
实用例句
- 1. When perigee and perihelion coincide tidal range is at its greatest.
- 当月球与地球到达它们的近地点和近日点的时间恰好重合时,就会引起最大的潮汐.
来自辞典例句
- 2. The anomalistic year is the time between successive transits of the Earth through the perihelion.
- 近点年是地球连续两次通过近日点之间的时间.
来自辞典例句
- 3. How much does the direction of perihelion change each orbit?
- 近日点方向使每个轨道改变了 多少 ?
来自互联网
- 4. The angular deviation, as observed from the sun, of a planet from its perihelion.
- 近点距离, 近点角从太阳观察到的行星距近日点的角度偏差.
来自互联网
