一切自行式车辆和工程机械，都离不开转向即行走方向控制。转向系统有机械式和液压控制式。
Steering control, that is, the walking direction control, is necessary for all self-walking vehicles and engineering machinery.
一切自行式车辆和工程机械，都离不开转向即行走方向控制。转向系统有机械式和液压控制式。
Steering control, that is, the walking direction control, is necessary for all self-walking vehicles and engineering machinery.
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