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On the base of Lord Kelvin point-source solution, the integral of Bessel function, Poisson superimpose formula and boundary element method, we resolve it and obtain the boundary element basic solution.

受求解方法局限性的限制，目前经典渗流力学理论还无法精确求解复杂外边界油藏中生产井层部分射孔问题。

Cross Entropy method has recently been proposed as a heuristic method.It shows some simple performance in the process of solving combinatorial optimization problems.This paper makes full use of Cross Entropy method to obtain the best estimator for the max-cut problem which is a standard NP-hard problem in graph graphic theory.

交叉熵方法是近几年发展而来的一种启发式方法，在求解组合优化问题中显示出其简单有效的特点，将运用交叉熵方法寻求图论中一个典型的NP困难问题—最大割问题的最优解。

Finally,we obtain the singular matrix Dirichlet andthe singular matrix Beta distribution,and the density functions of them are ob-tained.

最后，由退化矩阵Liouville分布构造了退化矩阵Dirichlet分布、退化矩阵Beta分布，得到了它们的密度函数的表达式。

In this paper, firstly, the embeddability of near-triangular graphs on the orientable surface is studied. By using Petersen's Theorem about 1-factor, we first prove that for a near-triangulation on the orientable surface, its geometry dual graph has a 1-factor; then after a procedure of operation leaded by the 1-factor, we show that if a graph G triangulates some orientable surface S_g, then G has a near-triangular embedding in S_h for h = g,g + 1,...,β(G/2」, where β is the Betti number of G. Hence we obtain a conclusion: A near-triangulation of the orientable surface is upper-embeddable. As a generalization, a class of near-quadrangulation is studied, and similar results are obtained.

本文首先研究了近三角剖分图的可定向曲面嵌入性质，通过运用Petersen关于1-因子的定理，首先证明了对于可定向曲面上的三角剖分图，其几何对偶图具有1-因子；然后在1-因子的导向下，通过做一系列增加亏格的手术，证明了如果一个图G三角剖分可定向曲面S_g，那么G可以近三角剖分可定向曲面S_h，这里h=g，g+1，…，「β(G／2」，β是指图G的Betti数，从而得出推论：可定向曲面上的三角剖分图是上可嵌入的，作为推广，又研究了一类近四角剖分图的可定向曲面嵌入性质，并得到类似的结论。

"Bhang:also bang,a preparation from the leaves and seed capsule s of the cannabis plant, smoked, chewed, eaten, or infused and drunk to obtain mild euphoria."

印度大麻：从大麻植物的树叶和种囊中提取的一种制剂，通过吸烟、嚼咀、吞食或注射以得到适度精神快感。

"Bhang:also bang,a preparation from the leaves and seed capsules of the cannabis plant, smoked, chewed , eaten, or infused and drunk to obtain mild euphoria."

印度大麻：从大麻植物的树叶和种囊中提取的一种制剂，通过吸烟、嚼咀、吞食或注射以得到适度精神快感。

We suggest that using bibliotherapy in synchronous interaction for following research to obtain effective interaction with students.

另外，研究过程中也发现读书治疗的技巧十分适用於同步互动，因此建议后续研究能更有系统性的采用读书治疗於同步互动中。

This theory can be used to find the bifurcation point on the equilibrium path and obtain the critical load and critical mode.

采用了塑性增量理论来决定结构的塑性应力状态，避免了结构反应对加载路径强烈的依赖性。

Subsequently,Bihari\'s inequality is generalized to the equation with fractional integral kernel.With the help of the new inequality,we further weaken the condition on equations with special integral kernels,and obtain the corresponding results.

然后，将Bihari不等式推广至具有分式积分核的情形，利用新的不等式对具有特殊积分核的方程条件做了进一步减弱，建立了相应的存在唯一性和正则性结论。

This paper mainly researches the Clamped Plate problem(or the eigenvalue problem of Dirichlete biharmonic operator) on n-dimensional complex ball,and we obtain an inequality for biharmonic operator on n-dimensional complex ball.

主要对n-维单位复球Bn的Clamped Plate问题(或Dirichlete重调和算子的特征值问题)进行了研究，得到了复球上重调和算子的特征值不等式

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％。