... 车架零件 frame parts 车架螺母 carriage nut 车架螺旋千斤顶 bolster screw jack ...
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Such carriage is supported by the drive but and is fixed with a drive device controlled by the control box, such drive device is linked with the drive nut;
轿厢上设有由控制箱控制的驱动装置，驱动装置与驱动螺母联动；
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