perigee

英['perɪdʒiː] 美['pɛrɪdʒi]
  • n. 近地点

中文词源


perigee 近地点

peri-,在附近,-gee,土地,词源同geology,Gaia.

英文词源


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).

双语例句


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 Moon reaches its absolute perigee once a year.
月球每年有一次达到它的绝对近地点.

来自辞典例句

3. The time between two passages at the perigee ( of the Moon ).
月球连续两次经过近地点所需的时间.

来自互联网

4. Due to lunar precession , this time is longer than that if the perigee's position was fixed.
由于月岁差的关系, 这个时间比近地点不变的情况下所需之时间长.

来自互联网