polar point 极点
polar point configuration 极点配置
Non-degenerate Polar Point 非退化极点
polar point and polar line 极点与极线
Point With Polar Offset 相对点的极偏移量
Polar Extremum Point 极坐标极值点
Often, scientists see large chunks drifting in polar seas, and then have to work backwards to figure out the point of origin.
通常来说，科学家们都是先观测到极地洋面漂浮着大面积冰块，之后再追溯它原始的形成过程。
And then I could do things like again, say, okay having done, that let me just run it here, run that, so I've now got polar point 1, and polar point 2.
然后给它们赋值半径和角度，然后我可以进行刚才的操作，也就是说，对刚才的笛卡尔坐标进行的操作，让我们来运行下它吧，运行下，现在我有一个极坐标点。
the same as polar point 2, polar point 1 And then I could say well, gee, are they the same point?
和另外一个极坐标点，我如果来试试，和polar，point，2是不是相同的话？
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