英语释义

1. a white spot at each pole of the planet Mars varying in size with the Martian seasons

片语

anterior polar cap前极帽

polar ice cap melting两极冰川融化

polar ice cap极地冰盖

polar cap ice极区冰

polar r cap极帽

polar-cap absorption极冠吸收

polar cap stage极帽期

shrink polar ice cap使极地冰盖萎缩

英汉例句

• the orbital characteristic of interplanetary probes has a direct bearing on the aim of probing. to explore the polar cap of the object body requires polar orbit(or the high inclination orbit).

  星际探测器轨道的特征与探测目的密切相关，对目标天体两极地区进行探测显然采用的是极轨道（或接近极轨道）。

• this warm polar cap is believed to contain the highest temperatures on saturn; the scientists did not give a temperature estimate.

  尽管科学家并未做出具体的气温评测，但他们相信这处「温暖」极冠包含着土星上的最高气温。

• at night the electron density is very low when the station situates at the polar cap area.

  夜间进入极差区后，电子密度则很低。

• the pinkish deposits constitute a vast south polar cap believed to contain methane ice, which would have reacted under sunlight to form pink or red compounds.

  这些固态氮冰在阳光照射下会产生化学反应，生成粉色或红色的化合物。

• the electron density is much lower at night in the polar cap areas.

  夜间进入极盖区后，电子密度则很低。

• as often seen through an astronomical telescope eyepiece, the planet「s orientation is inverted, with mars」 north polar cap at the bottom.

  由于往往是通过天文望远镜的目镜拍摄，火星的方向是颠倒的，行星的北极冠在下面。

• every winter, mars's polar cap is sheathed in a thin blanket of carbon dioxide.

  每到冬季，火星的极冠被一层薄薄的二氧化碳覆盖。

• visible also in the above images are the north polar cap of mars, dark and light soil, clouds, and, in the early images, a global dust storm.

  上面的影像中也可以看到火星的北极冰帽，亮暗不同的土壤，云层，以及早期影像中的沙暴。