A new rotation method of discrete variable is proposed.

提出了新的离散变量转轴法。

The method has been applied to the optimum design of discrete variable structure.

并将此方法应用于离散变量结构优化设计中。

The discrete variable optimum design of reinforced concrete continuous beams is discussed.

提出了钢筋混凝土连续梁的离散变量优化设计方法。

The mathematic model belongs to the nonlinear mixed-discrete variable optimization problem.

该模型属于非线性混合变量优化设计问题。

The optimal method-penalty technique can be used to solve discrete variable project problems.

用优化方法解决离散变量的工程问题，可采用惩罚函数法。