aphelion
n. 远日点
n.
远日点；
变形
复数：aphelia
英英释义
aphelion[ æ'fi:ljən ]
n.apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun
双语例句
用作名词(n.)
Otherwise difficult to notice, the change in the Sun's apparent diameter between Perihelion and Aphelion is clear.
我们很难用肉眼看出近日点和远日点太阳视直径的变化，但在这张图上显而易见。
权威例句
APHELIONNew near-aphelion light curves of Comet 2P/Encke
Near-aphelion CCD photometry of Comet P/S Schwassmann-Wachmann 2
Aphelion Clustering of ``New'' Comets: Star Tracks through Oort's Cloud
(2060) Chiron: Evidence for Activity near Aphelion
The Dust Trail of Comet Churyumov-Gerasimenko Near Aphelion
Water Vapor Saturation at Low Altitudes around Mars Aphelion: A Key to Mars Climate?
Mapping of Ozone and Water in the Atmosphere of Mars near the 1997 Aphelion
Mars ozone measurements near the 1995 aphelion: Hubble space telescope ultraviolet spectroscopy with the faint object spectrograph
Hubble Space Telescope observations of the Martian aphelion cloud belt prior to the Pathfinder mission: Seasonal and interannual var...
aphelion (n.)
"point farthest from the sun" (of a celestial body's orbit), 1670s, a Grecianized form of Modern Latin aphelium, altered by Johannes Kepler based on Greek apo heliou "away from the sun," from apo "away from" (see apo-) + heliou, genitive of helios "sun" (see sol). The whole was formed on the model of Ptolemaic apogaeum (see apogee) to reflect the new helio-centric model of the universe.
1. A comet is at aphelion when it is farthest from the sun.
彗星离太阳最远时就是在它的远日点上。
youdao
2. The Q is - do you mean Pluto in its aphelion or perihelion ?
我的问题是，冥王星此时是在近地点还是远地点？
youdao
3. But it's not that simple either, because the dates of the perihelion and aphelion are also shifting.
但这并不是简单的一件事情，因为近日点和远日点的日期都会变换。
youdao
4. The point in the orbit nearest the sun is called perihelion, while the point farthest is called aphelion.
在轨道上最接近太阳的点被称为近日点，而最远离太阳的点被称为远日点。
youdao
5. W hen the Earth moves from perihelion to aphelion, its radiation belts are expansion, and aphelion to perihelion contraction.
当地球从远日点运动到近日点时，地球辐射带向内收缩。
youdao
6. He also figured out the planet goes faster when it's at perihelion, nearer the sun, than when it's at aphelion, its farthest distance.
他还指出了，地球在近日点的速度要比它在远日点快，近日点离太阳比较近，远日点是距离太阳最远的地方。
youdao
7. This composite neatly compares two pictures of the Sun taken with the same telescope and camera on the dates of Perihelion (closest approach) and Aphelion in 2008.
这张合成照片直观地比较了两张由同一台望远镜和照相机拍摄的太阳，一张拍摄于2008年近日点，另一个拍摄于同年的远日点。
youdao
8. This composite neatly compares two pictures of the Sun taken with the same telescope and camera on the dates of Perihelion (closest approach) and Aphelion in 2008.
这张合成照片直观地比较了两张由同一台望远镜和照相机拍摄的太阳，一张拍摄于2008年近日点，另一个拍摄于同年的远日点。
youdao
aphelion
