• 通过对采煤新型升角螺旋滚筒极限转速理论分析确定了该种新型螺旋滚筒转速的合理范围

    The paper determines the rational range of a new spiral rotary drum's rotation speed through theoretically analyzing the critical speed of the drum in a coal machine.

    youdao

  • 提出一种计入弹簧大变形影响圆锥螺旋弹簧非线性螺旋弹簧理论

    Classic theory of conical helical spring is revised, and the analytic formula of nonlinear theory is derived.

    youdao

  • 提出一种计入弹簧大变形影响圆锥螺旋弹簧非线性螺旋弹簧理论

    Classic theory of conical helical spring is revised, and the analytic formula of nonlinear theory is derived.

    youdao

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