The initial simulation indicated that the shrinkage defects formed at the boss sections and the section near the connection of multi-diameter shaft.
初次模拟显示，在阶梯轴的凸台处与其临近连接的阶梯轴段会产生缩孔、缩松缺陷。
It can calculate the torsion rigidity of the variable section step-shaft simply using the general formula for calculating the same diameter shaft which can be found directly in material mechanics.
从而可利用材料力学中求解等直径圆轴扭转刚度的一般公式简便地求出变截面阶梯轴的扭转刚度。
Construction of a new shaft of the mine with diameter of 8 meters was completed in 2000. The widest shaft in Russia allows to take down large equipment.
直径为8米的新竖井工程已于2000年完成，该竖井为俄罗斯最宽的竖井，可以向下运送大型设备。
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