在每一个与基准轴a同轴的圆柱面内(测量圆柱)，该截面线应包含和基准轴相距0.1两个圆圈之间。
In each cylindrical section (measuring cylinder) coaxial with the datum axis a, the section line shall be contained between two circles 0.1 apart and perpendicular to the datum axis a.
应用几何图形，分析了变形轴中心孔与其最大内接圆柱体的关系；建立数学模型，计算了变形轴打中心孔时机械定心基准面的最佳位置。
Applying geometric figures, the paper analyzed the relationship between the central holes and the maximum inscribed cylinder of a deformed shaft;
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