The angle of the least inertia moment axis of grey scale image is an important shape feature in digital image analysis.
惯性主轴的方向是数字图象分析中重要的形状特征之一。
Part two analyses the space feature of TV image in the angle of Physics.
第二部分主要从物理学的角度，分析电视画面的空间特性；
The result shows that the strength feature of knee joint, back and waist muscle can be evaluated based on the parameters of relative moment of various joints, acceleration time and angle of moment.
结果表明，古典式摔跤运动员膝关节、腰背和肘关节力量特征，可用各关节作功时的相对峰力矩、加速时间和峰力矩角度的参数大小评价；
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