Polar Vector – an unusually long-lived Polar outbreak bringing very cold weather.

极矢量——异乎寻常长时间的极地寒潮带来的强冷空气。 。

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P-wave displacement is a polar vector, and its direction remains unchanged when we move it from right hand coordinate system to left hand coordinate system(or in the opposite way).

纵波位移是极向量，在坐标系由右手坐标系变成左手坐标系（或相反）时，不改变位移方向；

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The results show that the interference-free tool path can be generated with polar projection method and the even variable cutter axis vector can be obtained.

结果表明，极坐标投影法可以得到无干涉的五轴加工刀位数据，并可以获得均匀变化的刀轴矢量。

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