n. hollowness
2. As the hollowness is more than 50%, the deformation of hollow ball increases with the hollowness increasing. Max Mises stress has the law that first it rises,next descends,then rises again.
2.当空心度大于50%后,随着空心度值的不断增大,滚动体的变形量不断增大;最大Mises应力呈现先上升后下降再上升的变化规律。
参考来源 - 大型钛合金空心推力球轴承特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
分析结果表明，只要有效控制滚轮的空心度，空心滚轮将优于相应的实心滚轮。
The analytic results show that, if the hollowness is controlled properly, the hollow roller will be preferable to corresponding solid roller.
另外，对于陶瓷型芯与型壳定位的精确度、性能匹配性对高温合金空心叶片质量影响进行了评述。
In addition, the important influence of positioning accuracy and the consistency of ceramic cores and shells on the quality of superalloy hollow blade was evaluated.
所述空心齿轮、所述两个或更多行星齿轮以及所述太阳轮中的一个或多个包括多个被超精加工至0.25微米或更小的最终表面粗糙度的轮齿4。
One or more of the hollow wheel gear, two or more planet gears, and sun gear comprise a plurality of teeth 4 that have been superfinished to a final surface roughness of 0.25 micron or less.
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