Switch a car's headlights from a higher to a lowerbeam.
转变汽车的前灯使从高光束到低光束。
2
An ejector rod and a female die are fixed at the lower part of the upper beam, and a mold core is mounted on the lowerbeam. The end of the mold core has at least one shoulder.
于上架梁的下方固定有顶杆和凹模，于下架梁上安装有其一端部至少有一个肩凸的型芯。
3
When the door frame is seriously distorted, the main beam, the supporting legs, the lowerbeam, the trolley and the connecting piece of the frame can bear large distortion stress.