spherical surface distance
the distance between the two points on spherical s
distance between centres of lines；distance between centers of tracks；midway between tracks
distance offset distance
10000 m 3 nature gas spherical tanks
10000 m3 natural gas spherical tank
10000m^3 natural gas spherical tank
15MnVNR steel spherical tank
2-DOF spherical parallel mechanism
3-3R spherical type parallel mechanism
3-DOF spherical platform manipulator
3rd order spherical aberration
3-RRR spherical parallel manipulator
4A spherical molecular sieve
4th-order spherical aberrations
a permeable spherical shell
adaptive spherical covering