根据这些直线族，可以由已知的压头曲率和外载荷确定接触区尺寸。
Based on the above straight lines, the contact zone can be determined from the known indentor curvature and loading.
对空间任意既定六条或少于六条直线的直线族，剖析了若干具体例子。
Several special examples for cases of spatial straight line families which involve six or less than six arbitrarily given straight lines are dissected.
根据渐近曲线的方程，具体给出主法线曲面的一族非直线的渐近曲线。
According to the equation of asymptotic curves, a family of nonlinear asymptotic curves are given to the principal normal surface.
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