A rod, called a tie rod, connects to each and of the rack.
拉杆，或称为转向拉杆，与摇臂的另一端连接。
Similar to the paper chromatography except that the rod and the rack are not necessary.
仪器和操作过程和纸色谱相似，除了不用支架和杆子外。
Toothed rack on the connecting rod is engaged with gear in turn.
连杆上的齿条与齿轮依次啮合。
Toothed rack on the connecting rod is engaged with gear in turn.
连杆上的齿条与齿轮依次啮合。
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