annular concave spherical surface
Chip Breaker of Convex Spherical Surface
DDA on spherical surface
refraction at a simple spherical surface
spherical surface latticed shell
spherical surface solution
the method of spherical surface shearing
cold surface temperature
surface forming mechanism
transformed surface cold high
wheel-shaped surface forming accuracy of retention
Cold forming
冷成形
冷加工
冷成型
冷变形
冷弯成型
冷温型成
常温成形法
冷操作
冷模压
中厚板冷压成形
冷作
冷锻
冷成
cold forming dies materials
cold forming dies steels