Word
perigee
卫星轨道上离地球最近的点
核心释义
用于描述卫星轨道的术语
the point in its orbit where a satellite is nearest to the Earth
- 1.
近地点
The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter.
- 2.
近地点；卫星轨道上离地球最近的点
periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth
- 3.
轨道近点
The point, in an orbit about any planet, that is closest to the planet: the periapsis of any satellite.
- 4.
轨道最近点
The point, in any trajectory of an object in space, where it is closest to the Earth.
近地点；近地点；卫星轨道上离地球最近的点；轨道近点；轨道最近点
用法In use
The satellite moves fastest when it reaches perigee.
用法提示：此句中 perigee 作为名词，表示卫星轨道上离地球最近的点。
Engineers calculated the perigee of the new spacecraft.
用法提示：perigee 在此句中作宾语，指轨道近地点位置。
The difference between apogee and perigee affects orbital stability.
用法提示：perigee 与 apogee 对举，作为名词表示轨道参数。
at perigee
The Moon is at perigee tonight, appearing larger than usual.
今晚月球位于近地点，看起来比平时更大。
the perigee of [something]
相关词与表达Connections
反义词Antonyms
易混词Confusing words
- apogee
- 远地点 · 近地点指离地球最近的点，而远地点指离地球最远的点，方向相反易混淆。
- perihelion
- 近日点 · 近地点是地球卫星离地球最近的点，近日点是行星或彗星离太阳最近的点，适用对象不同。
词族Word family
- perigees
- plural
学习提示Learner notes
语法说明Grammar Note
用于描述卫星轨道的特定点
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.