perihelion

英式音标：[ˌperɪ'hi:lɪən]

美式音标：[ˌperɪ'hilɪrn]

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概况：

n. [天] 近日点；最高点

词义：

n.

近日点；

变形

复数：perihelia

英英释义

perihelion[ 'peri'hi:liən ]

n.periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun

用法：

双语例句

用作名词(n.)

A comet is at perihelion when it is closest to the sun.
彗星最接近太阳时，它就是在近日点。

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。

权威例句

Post-perihelion observations of water in comet Halley

Mercury's Perihelion from Le Verrier to Einstein by N. T. Roseveare

On the recently determined anomalous perihelion precession of Saturn

Activity of comets at large heliocentric distances pre-perihelion

Photochemistry of Pluto's atmosphere and ionosphere near perihelion

Photometric behavior of comet Hale-Bopp (C/1995 O1) before perihelion.

The NASA Infrared Telescope Facility Comet Halley Monitoring Program II. Post-Perihelion Results

Excess open solar magnetic flux from satellite data: 1. Analysis of the third perihelion Ulysses pass

Optical Observations of Comet Hale-Bopp (C/1995 01) at Large Heliocentric Distances Before Perihelion

Solar quadrupole moment and purely relativistic gravitation contributions to Mercury's perihelion advance

同义词：peak,acme

英语词源：

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.

造句：

1. longitude of perihelion

近日点黄经

-- 来源 -- 英汉 - 翻译参考[网络]

2. perihelion motion

近日点移动

-- 来源 -- 英汉 - 翻译参考[网络]

3. perihelion effect

近日点效应

-- 来源 -- 英汉 - 翻译参考[网络]

4. 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。

-- 来源 -- 英汉 - 辞典例句

5. perihelion passage

近日点通过

-- 来源 -- 英汉 - 翻译参考[网络]

6. argument of perihelion

近日点幅角

-- 来源 -- 英汉 - 翻译参考[网络]

7. perihelion distance

近日距

-- 来源 -- 英汉 - 翻译参考[网络]

8. time of perihelion passage

过近日点时刻

-- 来源 -- 英汉 - 翻译参考[网络]

9. precession of perihelion

近日点进动

-- 来源 -- 英汉 - 翻译参考[网络]

10. A comet is at perihelion when it is closest (=very close) to the sun.

彗星最接近太阳时，它就是在近日点。

-- 来源 -- 英汉 - 辞典例句