苏联制造了一种车顶可拉开的车辆。车顶由两个活动的半顶(长6,250毫米)和半顶间的固定支承梁(宽1,200毫米)组成。当一个半顶拉到另一个半顶上时,即能打开约半个车箱。为了完成这个作业,工作人员须爬上梯子,摘开扣钩,用专门的杠杆抬起半顶后,始能将其拉到另一个半顶上去,这是不容易而且不安全的。活动车顶间具有相当宽的支承梁,也 The Soviet Union made a car that could be pulled open on the roof. The roof is made up of two movable half-tops (6,250 mm long) and a semi-top fixed support beam (1,200 mm wide). When one half-top is pulled to the other half-top, about half a car can be opened. In order to complete this task, the staff members must climb the ladder, remove the clasps, raise the top half with a special lever, and then pull it to the other half-top, which is not easy and unsafe. The active roof has a rather wide support beam, too