在确定优化参数和约束方程的基础上，借助线性规划模型进行福建省耕地利用结构优化。
Based on the determination of optimizing parameters and boundary equations, the cropland using structure in Fujian Province was optimized by the model of linear programming.
选取结构的任一个循环对称扇区作为有限元计算模型，建立单个扇区复约束特征值方程；
The presented method selects only one cyclic symmetric sector of the structure as the finite element calculating model and establishes the complex constrained eigenvalue equation of the sector.
以位置约束方程奇异性条件和结构参数空间复形剖分方法为基础，研究了平面机构尺度分类问题。
Based on singularity of constraint equation and complex division of structure-parameter-space, the dimension classification method of planar mechanism was researched.
结构方程系数矩阵线性约束下的完全信息极大似然估计法。
The first is the full information maximum likelihood method with linear constraint of coefficient matrixes in structure equation.
提出了一种切实有效的数学算法构造了约束方程及其雅可比矩阵，实时地模拟了结构收纳过程的约束条件。
A practical mathematical algorithm was presented to formulate the constraint equations and the relevant Jocobi matrices, and to simulate the constraint conditions of the structural deployment.
建立了角台机构的反解方程，通过确定结构约束和齐次变换矩阵，解得角台机构的三个移动副输入参数。
Then it builds the equations for inverse problem and obtains the three input parameters according to the structure constraints and homogeneous transforming matrixes.
约束矩阵方程问题广泛地应用在结构分析、控制论、振动理论、非线性规划等许多领域，关于约束矩阵方程问题的研究有着重要的理论和应用价值。
The constrained matrix equation problems have been widely used in many fields such as structural analysis, control theory, vibration theory, nonlinear programming and so on.
通过有限元算例分析，验证了约束方程连接的体壳连接方法在平板结构、带安装边的圆壳结构以及带安装座的壳结构上的适用性。
The applicability of the restriction-equations method in smooth structures, cylinder with fixture fringe and shell with fixture seat is validated by FEM analysis.
介绍了一种由圆柱副、圆柱副和球面副组成的点、线约束的新型并联机构6-CCS，对其进行了结构分析，给出了运动学逆解方程。
A new parallel mechanism 6-CCS which is composed of cylinder and spherical joints is described in this paper. Configurable analysis and inverse kinematic equations are given.
介绍了一种由圆柱副、圆柱副和球面副组成的点、线约束的新型并联机构6-CCS，对其进行了结构分析，给出了运动学逆解方程。
A new parallel mechanism 6-CCS which is composed of cylinder and spherical joints is described in this paper. Configurable analysis and inverse kinematic equations are given.
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