1) inside service line;short service line
内开球线
2) outside service line;long service line
外开球线
5) spherical involutes
球面渐开线
1.
The paper ends with an exposition of the relation between the number of spherical involutes on a complete spherical surface ( Z ) and the ratio of the sphere radius to that of the cone base Rr .
从图解法的观点来研究绘制圆锥渐开面的三视图及其展开图的方法，并讨论了完整球面上球面渐开线的支数Ｚ与球半径和圆锥底面半径之比Ｒ／ｒ的关
6) spherical involute
球面渐开线
1.
During the modeling process,spherical involute was established directly by equations to guarantee the accuracy of tooth profiles,which provided accurate model for consequent finite element mechanism calculation of involute spiral bevel gears.
且在建模过程中直接利用方程建立球面渐开线,从而保证了齿形的准确性,为后续直齿锥齿轮的有限元力学计算提供了精确的模型。
补充资料：内开
1.公文用语，援引来文时用之。
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