带孔的圆柱壳体
Circular cylindrical shell with hole
不同直径圆柱壳
cylinder shell of different diameters
插入式大直径圆柱壳结构
thin-walled embedded large-diameter cylindrical shell structure
大直径圆柱壳
shell cylind er with large diameter
带肋圆柱壳结构
ring-stiffened cylindrical shells
大直径径向渗透率仪
full diameter radial permeameter