perigee
英['per?d?i?]
美['p?r?d?i]
- n. 近地點
中文詞源
perigee 近地點
peri-,在附近，-gee,土地，詞源同geology,Gaia.
英文詞源
- perigee
- perigee: see apogee
- perigee (n.)
- "point at which a celestial body is nearest the Earth," 1590s, from Modern Latin perigeum (15c.), from Late Greek peregeion, used by Ptolemy as a noun, properly neuter of adjective perigeios "near the earth," from peri ges, from peri "near" (see peri-) + ges, genitive of ge "earth" (see Gaia).
雙語例句
- 1. When perigee and perihelion coincide tidal range is at its greatest.
- 當月球與地球到達它們的近地點和近日點的時間恰好重合時,就會引起最大的潮汐.
來自辭典例句
- 2. The Moon reaches its absolute perigee once a year.
- 月球每年有一次達到它的絕對近地點.
來自辭典例句
- 3. The time between two passages at the perigee ( of the Moon ).
- 月球連續兩次經過近地點所需的時間.
來自互聯網
- 4. Due to lunar precession , this time is longer than that if the perigee's position was fixed.
- 由于月歲差的關系, 這個時間比近地點不變的情況下所需之時間長.
來自互聯網