查询词典 under weight

It is important to reduce the span of the hard roof to avoid its impact load on supports. However, at longwall top coal caving face, the periodical weight of roof is a main factor that crushes the top coal, which is beneficial to the top coal recovery. How to use the roof pressure safely is of crucial importance in top coal caving. Based on field monitoring, theoretical analysis of strata movement, the numerical model of compound structure of hard roof stepped cantilever and the top coal cantilever beam is built, and the parameters of the model are also determined. The elasto-plastic finite element method is used to analyze the effect of hard coal fracture under the abutment pressure of hard roof, and the cracking coefficient is defined according to the stress state of the element.

通过对岩层移动的现场观测，建立了&两硬&条件综放采场台阶悬臂—悬臂梁组合的煤岩组合结构力学模型，并以此煤岩结构为基础，建立&两硬&条件综放采场顶煤压裂的有限元数值模型，分析了坚硬顶板不同来压步距对坚硬顶煤的压裂效应，并确定了合理的支架阻力，从而对坚硬顶板进行有效的控制，消除坚硬项板对采场的冲击隐患，同时保证采场矿压对坚硬顶煤的有效压裂，达到提高顶煤回收率之目的，由此形成了坚硬顶煤、坚硬顶板条件下综放采场围岩控制的基本理论和方法。

Based on the nonlinear geometric relation between strain and displacement of flexible cable , the equilibrium equation under self-weight and influence of temperature are established and an analytical solution of displacement and tension distribution defined in Eulerian coordinate system is accurately obtained.

根据柔索应变与位移的非线性几何关系以及自重作用和温度影响下的平衡方程，采用欧拉描述的坐标系统精确地求得了各点的位移和张力的解析解。

On the basis of nonlinear geometric relation between strain and displacement for flexible cable, the equilibrium equation under self-weight and the influence of temperature, an analytical solution of displacement and tension for every point defined in Eulerian coordinate system is obtained accurately.

根据柔索应变与位移的非线性几何关系以及自重作用与温度影响下的平衡方程，采用欧拉描述的坐标系统，精确地求得了各点的位移和张力的一般解。

On the basis of nonlinear geometric relation between strain and displacement for flexible cable, the equilibrium equation under self-weight and influence of temperature, an analytical solution of displacement and tension for every point defined in Eulerian coordinate system is obtained accurately.

根据柔索应变与位移的非线性几何关系以及自重作用与温度影响下的平衡方程，采用欧拉描述的坐标系统精确求得各点的位移和张力的一般解。

Body size – low body weight (under 127 pounds) and small-boned frame individuals are at higher risk.

体型—低体重（127磅以下）并且骨架结构较小的人是此病的高危人群。

By the use of finite element method and through the analysis of stress field in the frame structure of shaving board foming machine this paper carried out an op-timal design of this frame sturcture by adopting a mode of di-mension and shape functions,thus give the structure a full play on the mechanical propersties of its material under the catalogue of optimization searching of lowest weight.

刨花板成型机机框结构有限元分析及优化设计汤文成，易红，葛巧琴摘要通过有限元方法对刨花板成型机机框结构的应力场分析，采用尺寸和形状函数方式对其进行优化设计，使结构在重量最轻的寻优目录下充分发挥其材料的机械性能。关键词有限元方法，优化设计Opti

Long-March bridge's finite element model is established on the basis of all above. FEM is used for analysis the change of interal force under the self-weight, prestress and experimental load.

在这基础上建立了全桥的有限元模型，分析结构在恒载，预应力和试验载荷作用下的内力变化。

Finally, a sixteen-meter - caliber-circinal-paraboloid structure under the action of self-weight is optimally designed.

对在自重载荷作用下的16m口径圆抛物面天线结构进行了优化设计，结果表明该优化程序收敛快、稳定性好。

Significant variance in protein content, gluten content, sedimentation value and test weight et al were found under different environments.

在基因型与环境的双重作用下，小麦籽粒品质均表现出较大的差异。

Assuming that the horse is stiff on the left side, trot around the arena on the right rein. At C, turn down the center line. Shift your weight slightly onto your left seat bone to encourage the horse to step under your center of gravity.

假设马匹左侧僵硬，在场地中做右里怀快步，在 C 点转向中线，调整骑手重心到左坐骨上，鼓励马在你的新的重心下踏进。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。