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一、小车结构:小车由车轮、车架和刹车三部份组成。车轮内装有元柱滚珠六盘,前轮直径500毫米,两个后轮直径250毫米。车架用100×100×1400毫米
First, the structure of the trolley: The trolley consists of three parts: the wheel, the frame and the brake. The wheel is fitted with six balls of yuan pillars, with a front wheel diameter of 500 mm and two rear wheels with a diameter of 250 mm. Frame 100 x 100 x 1400 mm