天赤道

From 20 degrees above the ring plane, Cassini's wide angle camera shot 75 exposures in succession for this mosaic showing Saturn, its rings, and a few of its moons a day and a half after exact Saturn equinox, when the sun's disk was exactly overhead at the planet's equator.

从20度以上的环平面，卡西尼号的广角镜头，连续75个暴露这个马赛克显示土星环和其卫星一天半的一些具体土星春分后，当太阳的磁盘上，正是开销地球的赤道。

From 20 degrees above the ring plane, Cassinis wide angle camera shot 75 exposures in succession for this mosaic showing Saturn, its rings, and a few of its moons a day and a half after exact Saturn equinox, when the suns disk was exactly overhead at the planets equator.

从20度以上的环平面，卡西尼号的广角镜头，连续75个暴露这个马赛克显示土星环和其卫星一天半的一些具体土星春分后，当太阳的磁盘上，正是开销地球的赤道。

The corona type aurora mainly occurs at polarward and overhead of Zhongshan Station during postnoon and around midnight. The band type aurora mainly appears during postnoon, while during evening and around midnight only appears at equatorward.

冕状极光主要出现在子夜附近和午后的极向侧和天顶，在傍晚出现很少；带状极光主要出现在午后和赤道侧的傍晚与子夜；极光浪涌主要出现在子夜前后；向日极光弧则主要出现在子夜前后，子夜前比子夜后多，极向和天顶比赤道侧多。

But the only zones in which the moon passes the zenith, the point directly over the head of the spectator, are between the twenty-eighth parallels are the equator.

但是，月亮经过天顶点，也就是说它能够爬上观测者的头顶的地方，必须位于地球赤道和南北纬二十八度之间的地带。

Either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length 2: either of the two celestial points at which the celestial equator intersects the ecliptic.

每年太阳会越过地球赤道，此时白天与黑夜长度均等。2、赤道在这2个天相点上交叉出现日食。

If that orbit is also in the plane of the equator, the satellite will hang in the sky over a fixed location in a geostationary orbit.

如果那轨道也是在地球赤道的飞机中，卫星将威胁一在一同步轨道中的固定的位置在天空中。

An arc of the celestial equator eastward from the vernal equinox.

从春分点沿天赤道向东测量所得的角度。

"Autumnal equinox:The point at which the ecliptic intersect s the celestial equator, the sun having a southerly motion."

秋分：指黄道与天赤道相交的一点，自此太阳向南运动。

"Autumnal equinox:The point at which the ecliptic intersects the celestial equator, the sun having a southerly motion."

秋分：指黄道与天赤道相交的一点，自此太阳向南运动。

SPACE FLIGHT EXPERIENCE: STS-32 (January 9-20, 1990) launched from the Kennedy Space Center, Florida, on an eleven-day flight, during which crew members on board the Orbiter Columbia successfully deployed a Syncom satellite, and retrieved the 21,400-pound Long Duration Exposure Facility.

太空飞行经验： STS-32 (1990年 1月9-20日)从佛罗里达州甘乃迪太空中心发射，进行十一天的飞行，在期间内哥伦比亚号太空梭上的组员们成功地部署了一具辛柯姆通讯卫星(Syncom，指美国发射的位於同步赤道轨道上的一系列通讯卫星)，并且收回了21，400 磅重的长期持续曝光设施。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。