This thesis has railed and proved the characteristics of locus mutual change about spherical surface and hyperboloidof the one sheet of revolution!
该文给出并证明球面与单叶旋转双曲面的轨迹互变特征。
2
The authors show that the hyperboloidof one sheet and the hyperbolic paraboloid are ruled surfaces.
单叶双曲面和双曲抛物面是直线曲面。
3
It's introduced in this paper how to draw the engineering drawing of the plow surface formed by a combination of a oblique helicoid and a hyperboloidof one sheet.