分度圆柱导程角
lead angle at reference cylinder
双导程圆柱蜗杆
dual lead cylindrical worm
摆动从动件圆柱凸轮
cylindrical cams with oscillating followers
圆柱凸轮机构
cylinder cram mechanism
cylindrical cam mechanism
变导程螺纹
Changeable screw-pitch thread
变导程螺旋面刃磨法
variable lead helical sharpening method
均变圆柱螺旋线
equal changeable column helical curve
齿轮导程检查仪
gear lead checking machine
带普通外圆导柱的丝锥
tap with plain cylindrical pilot
后导轮导叶
Guide blade of rear guide impeller