81 The purpose of these tests is to evaluate the ability of a receding door and its suspension to withstand repeated movements in and out of the stored position.
81 The purpose of these tests is to evaluate the ability of a receding door and its suspension to withstand repeated movements in and out of the stored position.
这些试验的目的是评价后斜门的能力，及其承受进出储存位置时的反复运动的悬置性能。