应用于河网地区重型钢管构件装卸的新型桅杆式组合抱杆的设计
응용우하망지구중형강관구건장사적신형외간식조합포간적설계
Design of new mast type combined gin-pole for loading and unloading heavy duty tubular steel component in river network area
저자의 최근 논문