Stick-slipflow is a jerky movement of compacted grains with velocity of particles at the walls slightly lower than in the rod like core.
粘附滑移流动是一种密集颗粒的急跳式的运动，在壁面处，颗粒的速度稍低于呈杆状的中心的速度。
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Then, the diagnosis algorithms for solving stick-slip, deadzone, jam, bias faults are discussed in detail based on analyzing the command, feedback and flow signals from the model.