采用基于灰度质心法的径向截面扫描法对图像边缘进行亚像素级检测；
Applying the radial section scanning method based on gray centroid, the image edges are tested with a sub-pixel precision.
径向负荷的重量是多少轴垂直放在上面。三轮车坐在一个地方对轴承的轴向负荷。下图是一个径向轴承截面的看法。
Radial loading is the amount of weight placed vertically above the axle. Sitting on a trike places an axial load on the bearings. The drawing below is a cross-sectional view of a radial bearing.
结果表明：截面高度对径向振动频率有显著影响，但是对切向振动频率影响很小；
The results showed that the radial frequency was greatly affected by the height of the cross-section, but the tangential frequency wasn't.
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