大跨空间网架结构
long-span space truss structures
蒙皮桁条结构
skin-stringer construction
门式轻钢结构
Door-style light steel
portal light steel structure
门式刚架轻型钢结构房屋
Gate-type ortal frame light steel structure housing
门机四连杆结构
four-bar linkage structure of crane
门机结构
Gantry crane structure
Structure of Gantry Crane
门盖的支撑调整结构
supporting and adjusting structure of the door