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1·The researches on the preloaded hollow cylindrical roller bearing are much less, no research paper is found about this aspect in the magazine at home by now.

而关于预负荷空心圆柱滚动体轴承的研究更是少之又少，到目前为止，在国内的期刊和杂志上还没有发现关于这方面的研究论文。

2·At last, the rigidity of the preloaded hollow cylindrical roller bearing is researched.

最后，又对预负荷空心圆柱滚动体轴承的刚度进行了研究。

3·With an additional axial thrust bearing, both the thrust and radial bearings are preloaded individually.

由于增加了一套轴向止推轴承，所有的推力和向心轴承均被分别预加载。

4·The values of speed ratings given in the bearing tables apply to single mounted, lightly preloaded NKE spindle bearings (ie operating at zero clearance).

轴承表中给定的速度评级值适用于单一的安装，轻轻预装nke的主轴轴承(即零间隙操作)。