闭口薄壁杆件
thin-walled member with dosed section
thin-walled member with closed cross section
变截面杆件
variable cross section of rods
薄壁杆件的扭转
Torsion of thin-walled bars
薄壁杆件结构
thin-walled bar structure
差速锁联动杆件
differential lock linkage
铲斗定位器杆件
bucket positioner linkage
铲斗杆件支撑总成
bucket linkage support assembly
铲斗连动杆件调整
bucket linkage adjustment