34孔打孔装订机
34 holes Punching-Binding Machine
激光打孔打标
laser drilling and marking
纸带打孔打字机
paper tape perforating typewriter
tape punch typewriter
多孔墙体
porous building component
porous wall
未打穿砂井
partially penetrated vertical drains
partially penetrated vertical drain
未打穿砂井地基
partially penetrating sand drain ground
partially penetrating sand drains
未打穿竖井地基
ground with partially penetrated vertical drains
未打穿竖向排水井
partially penetrated vertical drains