3-3R球面并联机构
3-3R spherical type parallel mechanism
3-RRR球面并联机构
3-RRR spherical parallel manipulator
Gauss(球面)映射
Gauss(or spherical) mapping
K8型椭球面网壳
ellipsoid reticulated shell
n维共球有限点集的欧拉超球面
the Euler hypersphere of the n-dimensional consphere finite point sets
凹非球面
concave aspherical surface
凹球面
concave spherical surface
concave spherical substrate
concave
凹球面环状
annular concave spherical surface