... polar continental air 极地大陆空气 polar distance 极距;余赤纬 polar easterlies index 极地东风指数 ...
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N the angular distance of a star, planet, etc, from the celestial pole; the complement of the declination 极距 (Also called codeclination)
Main factors of magnetic intensity and polar distance influencing the dry high magnetic separation were studied in this paper.
本文对影响干式强磁分选的主要因素磁场强度和极距进行了试验研究。
So, in a way, you can think of these as a space analog of polar coordinates because you just use distance to the origin, and then you have to use angles to determine in which direction you're going.
也可以把这种坐标，看成是空间中的极坐标，它其实使用了，距离原点的距离，然后用角度这种标尺，来确定了方向。
Some polar bears have been seen swimming hundreds of miles from land—though they probably cover most of that distance by floating on sheets of ice.
曾经有人观察到北极熊在水中连续游泳数百英里，当然也许有相当的距离它们是靠借助漂浮的冰面“偷懒”完成的。
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