单心球面系统
concentric spherical lens system
单形的外接球心及外接球半径
center and radius of circumscribed sphere of simplex
单中心球模型近似
one center spherical model approximation
one center spherical model
点球心理
psychology in penalty kick
调心球轴承
Spherical Ball bearing
self-aligning ball bearing
反球心投影
gnomonic reciprocal projection
富铝尖晶石空心球
rich alumina spinel bubble
高压韧性离心球墨铸铁管
centrifugal ductile iron pipe