变截面圆柱形空腔
varying sectional cylindrical cavity
动臂球面圆柱形轴承
boom spherical cylinder bearing
混合层合圆柱曲板
hybrid laminated cylindrical panel
加筋圆柱壳和圆柱曲板
stiffened circular cylindrical shells and stiffene
均匀带电直圆柱面
uniform electric straight cylinder surface
平面圆柱投影
flat cylinder perspective
平面圆柱透影
flat cylinder perspective
球面圆柱头螺钉
fillister(raised cheese)head screw