砂轮主轴与电机一体，采用预加载荷的高精度滚动轴承。
Wheel spindle and motor is either designed to use preload super precision ball bearing in a case.
重点是对试验结果进行分析，从而确定检测方法的有效性和预加载荷值的大小。
Test results have been analysed emphatically to determine measuring method efficiency and pre-loading value.
为了研究静力预加载荷对诸如柱、圆柱壳等结构动态稳定性的影响，采用了一种简单的缺陷敏感弹塑性模型。
In order to study how the static preloading affects on the buckling stability of columns or cylindrical shells, a simple imperfection-sensitive elastic-plastic model is used.
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