支撑螺母克服弹簧的偏置旋紧到支撑杆上来保证车窗位于其关闭位置。
The support nut is screwed onto the support rod against the bias of the spring to secure the window in its closed position.
分为上下两层，低层可放常用工具。支撑腿部位装有可调螺母。
It is divided into two floors up and down, low-rise can be put frequently used tool. Leg-bit support with adjustable nut.
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