约束

In the research, the study of car impact test and numerical simulation method are both used. Based on works that have done, an impact model containing car model, dummy and restriction system model was built. According to national regulation, different types of impacts were simulated. The fuel cell auto's impact safety was analyzed, and the injury criterion for occupant can be read out directly by simulation data. The main research content of this project is to set up the fuel cell auto's frontal impact model, side-impact model, rear-impact model and the whole frontal impact model, which contains car model, dummy, restriction system model and so on, and calculating these models.

在本课题的研究过程中，博采众长，坚持创新，在综合分析总结前人研究经验的基础上，将实车碰撞试验研究与仿真计算分析方法结合起来，统一车身耐撞性有限元计算分析与乘员在约束系统作用下的运动响应的多体动力学分析，采用整车虚拟碰撞试验法进行燃料电池轿车的碰撞安全性研究，即建立一个集车辆、人体模型及乘员约束系统三者于一体的完整的车辆模型，以国家安全法规为依据，进行各种碰撞型式的整车虚拟碰撞试验，利用仿真计算结果进行燃料电池轿车的碰撞安全性分析，直接预测乘员的伤情指标。

Through the definition of behavioral synthesis meaning of AFTER clauses, the enhanced ASAP and ALAP algorithm under AFTER clause delay time constraints is presented. The scheduling model under AFTER clause delay time constraints is also presented. The scheduling model is resolved by ILP.

通过对其行为综合语义的定义，给出了在AFTER子句时延约束下的ASAP和ALAP算法，建立了AFTER子句时延约束下的调度模型，并采用整数线性规划法求解调度模型。

When they bear the burthens of unlimited monopoly, will you bring them to bear the burthens of unlimited revenue too?

当他们承受着不受约束的垄断的重压，你们再让他们承受不受约束的税收？

For the general model with rooted forest precedence constraints jobs or series-parallel digraphs jobs, the optimal algorithms are presented.

对增长率与基本加工时间相关且工件具有有跟森林约束和有串并有向图约束的的单机问题进行研究，分别给出了最优算法。

The article simply expounders the Theory of Disequilibrium Transportation Planning on the basis of analyzing the causes of traffic congestion problem,and analyses the urban transportation planning rigid constraint qualification, sequentially,educes concrete limit constraint qualification,provides a certain theoretical basis and design parameters to transportation planning.

文章在分析交通拥挤问题原因的基础上，简单阐述了非均衡交通规划理论，并基于该理论分析了城市交通规划的刚性约束条件，得出了具体的边界约束条件，为交通规划提供了一定的理论依据和设计参数。

The soliton hierarchies associated with the modified second order polynomialeigenvalue problems can be factorized into the commuting x- and 〓-constrainedflows, the r-matrices and classical Poisson structures for the x- and 〓-constrained flows are constructed.

与修正的二阶多项式特征值问题相联系的孤立子方程族可以被分解为相互交换的x-和〓-约束系统，本文求出了约束系统的r-矩阵和经典Poisson结构。

If peasants are in a heavy pressure from capital restriction, they may have to sell at the "three sale fastigiums" and lose their opportunities of maximizing their sale profits.

回归结果在整体上验证了本文的整体分析及具体假说，农户的农作物品种越特殊、农户家庭经济中农业比重越高、户主信息可得性越强，农户越倾向于选择&新型销售方式&；农户面临的资金约束是农户选择在&三大销售高峰期&销售的最重要原因，当农户的资金压力形成硬约束时，农户没有选择实现利润最大化的销售时机的自由。

The results show that the flap hinge spring rate has a great effect on helicopter stability and control, but precone and prelag angle,lag hinge spring rate and blade lag motion can be negligible...

分析结果表明：旋翼的预锥角和预掠角对直升机全机的稳定性和操纵性的影响可以略去不计，而桨叶根部挥舞方向上的弹性约束刚度对直升机全机的操纵稳定性有较大影响，摆振方向上的弹性约束刚度和桨叶的摆振运动对直升机稳定性的影响不大，可以略去不计。

Comparison of case calculations indicates that different site sets may require varied methods to construct optimal grids. Among them the "optimized dynamic allocation under flattest model constraint", and "optimized dynamic allocation under smoothest model constraint" are most adaptive, by which the constructed grids have fairly smooth grid spacing and smaller site shifts.

算例对比研究表明，对于不同的测点集，最佳网格构建的方法可能不相同，但其中&最平模型约束动态配点法&、&最光模型约束动态配点法&拥有最强的适应能力，它们在各种情况下所构建的网格一般同时具备较光滑的网格间距变化和较小的测点偏离程度。

Outside the constraints that a component deformation by other components of obstruction, or a component deformation by another member of the obstacles, such as the circle beam on the floor of the binding effect.

外约束指一个构件变形受到其它构件的阻碍，或一个构件变形受到另一个构件的阻碍，如圈梁对楼板的约束作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。