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1·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。

2·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。

3·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。

4·A system of coordinates in which a point is located by its distance and direction (Angle) from a fixed point on a reference line (called the polar axis).

一种用点离基准线上(称极轴)固定点的距离和方向(角度)来表示点位置的坐标系统。

5·The polar equation of non-circular gear pitch curve, calculation method of center distance, formula of pitch curve length, primary circle radius and pressure Angle is given.

给出了非圆齿轮的节曲线极坐标方程，两齿轮中心距的计算方法，节曲线长度、基础圆半径和压力角的计算公式。

6·Polar bears are champion long-distance swimmers among land mammals, and it is not uncommon to find them at sea as far as 50 miles from land or an ice floe.

在陆地哺乳动物中，北极熊无疑是长距离游泳冠军。人们经常在距离陆地或者大块浮冰50英里远的地方看到它们。