半无限的

By combining analysis center cutting plane methods which have developed fast in the last years, we get a analysis center cutting plane methods for convex semi-infinite programming, which has a good convergence under modest assumptions.

第二章结合近期发展起来的分析中央割平面算法，在一定的假设条件下，得到了一个凸半无限规划问题的分析中央割平面算法，并得到了很好的收敛性结果。

In this paper, the analytical expressions of seismic input for homogeneous elastic half-space are first derived in oblique incidence of plane SV-wave, and then a finite element model for a real hydropower cavern group composed of main powerhouse- transformer chamber- tailrace surge tank cavern is created. Characteristics of seismic responses such as displacement, acceleration and stress are studied in detail at different incidence angles and some results are compared with those given by the literature.

本文首先推导了平面SV波斜入射下均质弹性半无限空间的地震动输入表达式，然后建立了某水电站主厂房室-主变室-尾水调压室等构成的地下洞室群有限元模型，详细研究了不同入射角度下各洞室的位移、加速度、动应力等地震反应特点，并与文献进行了对比。

The acceleration and sound pressure on the surface of seafloor are obtained.

建立了点声源作用下海底地震波的时域数值计算模型，利用该模型，对二维半无限空间简单海洋模型的低频点声源海底地震波问题进行了数值模拟，得到了海底表面处的加速度和声压值。

Research on the local response of spall for underground structures under blast loads was based on suppose of semi-infinite thickness of underground structures in the past.

过去对地下结构震塌破坏的研究，往往是在假设地下结构为半无限厚的基础上进行的。

The study on the mean number of phonons of the strong-coupling bondage polarons in magnetic field;2. The first excitation energy and the mean number of phonon of the strong-coupling magetopolarons in the polyatomic semi-infinite polar crystals were studied through a linear-combination operator and unitary transformation.

采用线性组合算符和幺正变换，利用变分法计算了多原子半无限极性晶体中由电子和光学声子强耦合相互作用所产生的磁极化子的第一激发能量及平均声子数，并通过适当的数值计算图示了它们与磁场的关系。

This thesis mainly employs the density-matrix renormalization group to investigate the valence bond model. We deal with the one-dimensional and quasi-one dimensional benzenoid systems from medium to infinite sizes successfully and get the ground state energies, the first excited state energies and other properties for the first time.

本论文的主要方面是将密度矩阵重整化群方法引入苯型分子的半经验价键处理，精确计算了一维单层苯型烃及双层苯型烃从小到大，直至无限的基态能量，第一激发态能量及局域芳香性等基本性质。

Heat and mass transfer effects on unsteady flow of a micropolar fluid through a porous medium bounded by a semi-infinite vertical plate in slip-flow regime was studied, taking into account the homogeneous chemical reaction of first order.

对半无限竖直平板为边界的多孔介质，研究了传热、传质对微极流体不稳定滑流的影响，其化学反应是一级均匀的。

A simplified theoretical model has been established to describe the big yawed rod penetration into semi-infinite Rolled Homogeneous Armor targets at normal incidence, the effect of ballistic yaw is quantitatively described in the rate of penetration.

本文建立了大攻角的长杆体垂直侵彻半无限靶的简化物理模型，定量地分析了大攻角对垂直侵彻的影响。

It is suggested that the internal forces of anchor frame beam to be calculated with Winkler foundation beam and semi-infinite elastic theory. At the same time the pertinent proposal for designing frame beam is offered based on an actual project.

结果表明：框架梁的设计完全依据膨胀力是欠合理的，建议采用Winkler地基梁和半无限弹性体理论计算框架梁的内力，并结合工程实例，提出了相关的建议。

The approximate analytic solution for the plane problem of semi infinite elastic solid subjected to a concentrated force at the midpoint of bottom of a groove is given by means of complex stress function.

运用复变函数方法，求出了半无限弹性体通过刻槽之底施以集中力的平面弹性应力场的近似解析解，并进行了光弹性试验，理论上求得的应力分布与试验结果相吻合

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。