...定义4.3.1 空间一条曲线C 绕一条直线L 旋转所得曲面称为旋转面(surface of revolution)，C 称为 旋转面的母线(generating curve)，L 称为旋转面的轴(axis of rotation). 母线C 上任意一点绕L 旋转的轨迹是一个圆， 称为纬圆(纬线).
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3-generating curve method 三母线法
generating curve of a lens 透镜母线
generating oval curve 卵形曲线的生成
curve generating 曲面成形 ; 球面磨削
The paper has calculated equation of the generating curve of minimal surface of revolution by the approach of analysing.
用分析的方法导出了极小旋转曲面的生成曲线的方程。
When calculating, only function of the longitudinal generating curve of the revoluted curved surface and the value of the projecting angle are needed to be substituted into these formulas.
这些公式的运用很简便，只常将回转曲面的纵母线函数及投射角的值代入即可。
In this paper, gas generating strength of propellant charge was studied on basis of retreating for bore pressure time curve, and physical firing law of propellant charge was analysised.
通过对火炮膛内压力-时间曲线的再处理，研究发射药的气体生成强度，进而分析发射药装药的物理燃烧规。
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