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At first, numerical simulation are made on the temporal developing gas-phase mixing layer where the convective mach number is in the region of subsonic(0.5) and transonic(0.8). For the temporal problem where Mc is 0.5, researches where the computational field contains different numbers of initial disturbances(so-called n period problem) are made respectively, and vortex's types of evolution in mixing layer including different numbers of initial disturbances are investigated; For the temporal problem where Mc is 0.8, the distinct shock let structure is obtained, and its mechanism is analyzed at the same time.

文中首先对对流马赫数为亚声速(0.5)、跨声速(0.8)的时间发展单气相混合层作了数值研究，对Mc为亚声速单气相时间发展混合层，分别研究了计算域包含不同数目的初始扰动周期问题，考查了不同周期数的混合层中涡的不同演化方式；对Mc为跨声速的单气相时间发展混合层，得到了清晰的小激波结构，同时分析了小激波的形成机理。

From describing the controlling anchor amount and shield thickness of the Kao-Tang Railway Tunnel Ⅳ class rock wall segment initial protecting shield, the article analyses the function theory of New Austria Tunneling Method initial protecting shield and its use in the flabbiness wall rock protecting.

结合铁路考塘隧道中的Ⅳ级围岩地段初期支护中的锚杆数量与喷层厚度控制，分析了新奥法初期支护的作用原理以及此类支护在软弱围岩中的应用。

The results show that the rate of decolorization of activating calcareous adsorbentis is 99.33%, COD removal rate equals to 85% when the pH 7 for acid fuchsin dye, 10 mg/L initial concentration of dye 10 g/L adsorbent 103.5 mg/L initial COD adsorb 5 min.

结果表明，处理含偶氮结构的酸性品红染料废水，当初始pH值为7、初始浓度10 mg/L、吸附剂用量10 g/L、原水COD 103.5 mg/L时、吸附反应5 min后色度去除率为99.33%，COD除去率为85%。

The effect of initial pH, temperature and N263 concentratio n on extraction of fucoidan was investigated. It has shown that temperature and initial pH of the solutions have no great influences on the extraction of fucoid an, and when N263 concentration is low, an increase in the concentration incre ases the extraction of fucoidan.

对影响萃取褐藻糖胶的水溶液初始pH、温度及N263浓度等因素研究结果表明，N263浓度是影响褐藻糖胶萃取的主要因素，而初始pH、温度等的影响不大。

According to theory analysis and example computation, the following conclusions are obtained.1. During the analysis on the cable shape in the suspension bridge"s completion state, the pre-displacement of saddle and the case that the cable and stiff girder commonly bear the second-stage dead load should be considered.2. When supposing the construction ideal initial state in the first time, if the initial state model is established according the cable"s span central sag in the bridge"s completion state, and the reasonable correction formulation is created in the iteration process, the result can converges fast.3. The cable shape in the bridge"s completion state is not parabolic, nor catenary. It is between parabola and catenary. Actually it is funicular polygon closer to the catenary.

通过理论分析和实例的计算表明：1在悬索桥主缆成桥线形分析过程中，须考虑主塔鞍座的偏位以及二期恒载由主缆和加劲梁共同承担的实际情况；2在第一次假设施工理想初态时，以成桥状态已知的主缆跨中垂度建立施工理想初态模型，同时在迭代计算的过程中，建立合理的修正公式，才能使收敛的速度快：3在成桥状态时主缆的线形既不是抛物线，也不是悬链线，而是介于抛物线与悬链线之间，更接近于悬链线的索多边形。

The nonlinear dynamic equations including the initial geometric imperfections of laminated composite cylindrical shells were derived from Hamilton's philosophy. Assuming the transverse displacements to be composed of axially symmetrical part and axially asymmetrical part, the governing equations expressed as displacement forms of dynamic buckling were obtained by Galerkin method. The equations were solved by finite difference method. The effects of impact velocity, lamination angle, initial geometric imperfection on the axial dynamic buckling of laminated composite cylindrical shells were discussed.

由Hamilton原理导出包含初始几何缺陷的复合材料层合圆柱壳的非线性动力方程；将横向位移设为对称及非对称两部分，由Galerkin方法得到以位移形式表达的动力屈曲控制方程，通过有限差分方法求解；讨论了冲击速度、铺层角度、初始几何缺陷等各种因素对复合材料圆柱壳轴向冲击动力屈曲可能产生的影响。

Optimization experiment being single factor shows that the best condition of tannase production should be in the gallnut amount of 8%, the initial moisture content of 50%, the initial pH 6.0, temperature of 30℃.

单因素优化试验表明，五倍子用量为8%，初始水分含量为50%，初始pH6.0，温度30℃为优化产酶条件。

The influence of initial imperfections on the stability ofcomposite laminated plates was studied by solving the nonlinear governing equations for laminated plates with elastical restraints subject to in-plane loading using the energy variational principle and nonlinear geometric equations incorporating the initial imperfection. The governing equations were solved using generalized Fourier series to obtain the effect of the non-uniform order term.

为深入研究初始缺陷对复合材料层板稳定性的影响，利用能量变分原理和考虑初始缺陷的非线性几何方程，建立了具有弹性约束的层合板在面内载荷作用下的非线性稳定性控制方程组，运用广义傅立叶级数法对其进行求解，并进一步获得了影响非线性稳定性控制方程组的性质的非齐次项。

Second, an analysis and contrast is made among several structures appearing in the market, one of which is chosen to be the initial model of the system and the need of initial parameters is calculated based on relevant geometrical optics.

然后对市场上现有的几种结构进行分析对比，选取其中一种作为设计的初始模型，利用相关光学知识计算初始设计参数。

Special FEM analysis considerations of pantadome system are taken into account in the mechanical theoretical analysis. The problem of initial deformation and initial stress of pantadome, serialization treatment of the FEM results are discussed, the treatment methods of calculate results are deduced, membrane stress and flexural stress of gyrate shell are deduced in this paper.

在攀达穹顶的力学理论分析中，针对攀达穹顶体系的特殊性进行了有限元分析，研究了攀达穹顶体系分析中的初始变形与初始应力问题，对攀达穹项体系有限元计算结果进行了连续化处理，提出了计算结果的连续化处理方法，推导了连续化处理时各个力的求解方法并求解了旋转壳的膜应力和弯曲应力。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样