Strength design of ancient canal boat is studied based on direct design method.
采用直接设计法对运河漕舫的首部结构进行了强度设计。
Based on the demands of two limit states, the design control equations of cross section for prestressed concrete beam are derived and the direct design method is presented.
根据两类极限状态的基本要求，建立了预应力混凝土梁截面设计的控制方程，提出了直接设计方法。
For IIR, after researching Pulse Response Method, Step Response Method, Bilinear Transform Method, Direct Design Method, it is found that IIR is unsatisfactory.
对IIR的脉冲响应不变法、阶跃响应不变法、双线性变换法和直接设计法进行研究，得出IIR难以满足要求的结论。
For IIR, after researching Pulse Response Method, Step Response Method, Bilinear Transform Method, Direct Design Method, it is found that IIR is unsatisfactory.
对IIR的脉冲响应不变法、阶跃响应不变法、双线性变换法和直接设计法进行研究，得出IIR难以满足要求的结论。
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