环形拉幅机
circular stretching machine
环形形变光栅
toroidally-deformed grating
矩形环形复合感应器
inductor of rectangle-cycle multiplex structure
拉筋拉力
tensile force of the reinforcement
拉深筋实验台
drawbead experiment device
拉深筋阻力
drawbead restraining force
drawbead restrained force