polar inertia moment of area 截面极惯性矩
Based on studying the way of polar moment of inertia, a new method of major and minor axis detecting by DDA was provided.
特征提取是葡萄干等级检测的基础，该文在研究极惯性矩计算长短轴方法的基础上，提出一种利用数值微分法进行长短轴检测的新方法。
Polar moment of inertia can be increased by adding weight at 3 and 9 o 'clock, using the largest comfortable grip size and replacing worn grips regularly.
增加惯性力矩的方法是在3点和9点间增加质量，或者使用大的舒适的手柄并经常更换磨坏的柄皮。
Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane.
由于地球是扁球体，绕极轴惯量矩最大，而绕在赤道面内的轴的惯量矩最。
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