gypsum partition block 间壁用石膏砌块

gypsum pan partition block 间壁用石膏砌块

coupler yoke partition block 车钩尾框隔板

partition descriptor block 分区描述符块

cinder block partition 焦渣砖隔断墙

glass block partition wall 玻璃砖隔墙

Block partition plan 区块分区规划图

block partition 砌块隔墙 ; 块分割