虚的

Initial boundary value problem of two dimensional unsteady diffusion equations is solved in this paper. By using time-dependent fundamental solution of two dimensional diffusion equations and the extension of double layer potential, we establish virtual boundary integral expression of diffusion equations. Then virtual boundary element method is used to implement the numerical computation.

本文在求解二维非定常扩散方程的初边值问题时，利用二维扩散方程与时间有关的基本解，基于双层位势的延拓，建立二维扩散方程的虚边界积分表达式，然后利用虚边界元法进行数值计算。

In this thesis, the virtual boundary integral equation is based on double layer potential with the virtual density to be determined on virtual boundary. Since this integral equation related to double layer potential only involves the computation of the normal derivative and second normal derivative of fundamental solution, the exponential integral function is not involved in it, so numerical computation for the exponential integral function is avoid.

本文则基于双层位势，引入虚拟矩密度函数来建立虚边界积分方程，并首先对时间变量进行解析积分，在虚、实边界上采用常单元和等额配点离散，该方程只涉及含基本解的法向导数及其二阶法向导数项的计算，对时间变量进行解析积分后，不会出现对指数积分函数的空间变量的积分计算。

Half penalty method and optimism design of ten connecting bar mechanism of plunger slide in double action drawing press;2. The essential boundary condition is imposed by employing a penalty method .

将选择施加在"虚结构"控制点上的虚载荷作为形状优化的设计变量，并将它与无网格Galerkin法相结合来开展结构形状优化研究，采用罚函数法来施加边界条件，通过直接微分法建立了结构形状优化的离散型灵敏度分析算法，利用无网格法研究了节点坐标关于设计变量导数的计算。

The traditional virtual boundary integral expression is based on the extension of single layer potential, for the integral formulas related to single layer potential for parabolic problem, the numerical computation of the exponential integral function is unavoidable.

通常的虚边界积分公式是利用单层位势的延拓来建立虚边界元积分方程，但对带时间变量的单层位势，要涉及到指数积分函数的计算。

Yang, such as physical feelings are easy to fall and winter seasons寒邪be yang in spring and summer hair trend with the provision of appropriate products of Yang Yang, Yang drugs by the body and play a germinal suppression of yin-yang of Huanwu the role of physical fitness in order to be corrected Yang.

截止时间为5月6日晚18：00。需翻译一下内容：不同的体质类型在四时也应采取不同的养生方法。如阳虚体质者易于秋冬季节感受寒邪，则可于春夏两季借助阳气生发之势，给予适当的养阳之品，药物之阳借机体生发之阳而起到抑阴补阳的作用，从而阳虚体质得到纠正。

During the massive costs squeeze into the construction-in-progress, inflated profits Construction-in-progress is only accounting and engineering costs related to some of the costs and expenditure accounting subjects, but in the end with what works, which has nothing to do with the project, in terms of non-Action is difficult to distinguish between the strict, as some travel, hospitality, etc.

六、大量期间费用挤入在建工程，虚增利润在建工程仅仅是核算与工程开支有关的一些费用和支出的会计科目，而到底哪些与工程有关，哪些与工程无关，对非经办人而言是难以严格区分的，如一些差旅费、招待费用等，一些上市公司在建工程的核算内容随意性较大，将大量期间费用列入在建工程，虚增利润。

This paper gives the time domain integral constraints of the feedback control systems tracking error that arise from the presence of stable zeros on or near the jω-axis, which shows that for a linear time invariant system, in order to guarantee the stability of the closed-loop system, the time domain integral constraints must be satisfied by the tracking error.

本文给出了反馈控制系统接近虚轴或虚轴上的稳定零点对跟踪误差的时间域积分约束。这一时间域积分约束是任何一个线性时不变系统为保证其闭环系统的稳定性，其跟踪误差必须满足的。

ResultsComparing with gonadectomy Shenyangxu model group, Wenyangyishen Capsules can improve upset excitability of male rat of gonadectomy penis Home News for Overseas Service Department , shorten erection incubation period; The rat increasing gonadectomy male sex attaches weight modulus of sexual organ; Can urge the hypophysis , adrenal gland weight modulus to increase by, weight adjusting the thymus gland , spleen; Elevate rat serum testosterone、Cortisol contents obviously; Be caused by messenger Cortisol the various Shenyangxu model small rat symptom gets laxation disappear even.

结果 与去势肾阳虚模型组比较，温阳益肾胶囊能提高去势雄性大鼠阴茎对外部刺激的兴奋性，缩短勃起潜伏期；增加去势雄性大鼠附性器官的重量系数；能促使垂体、肾上腺重量系数增加，调节胸腺、脾脏的重量；明显升高大鼠血清睾酮、皮质醇含量；使氢化可的松所致阳虚小鼠各项症状得到缓解甚至消失。结论温阳益肾胶囊具有益肾壮阳的功效。

Results: The syndrome factors with qi deficiency is 48.8% and yin deficiency factor is 43.1%; The syndrome with qi deficiency factor accounted for 55.3%, the unoperated proportion of syndrome factor with blood deficiency is higher, the unoperated and receiving radiotherapy proportion of syndrome factor with yang deficiency is hgher.

结果：肺癌证候要素则以气虚(48.8%)、阴成要素(43.1%)为主，血虚要素多出现在肺癌的早期，而且未接受手术治疗的居多。阳虚要素在接受放疗的患者中出现的比例增高。

Company has been mainly based on integrity for high-quality, operates mainly in fresh Campanulaceae, do Campanulaceae, Platycodon silk exports be medicine, food medicines, according to my door to customer demand for processing different types of Campanulaceae such as: size length, size , and many virtual virtual Campanulaceae less, thereby creating a custom-made products, my door's purpose is: Let customer satisfaction is my goal door, so that benefits are my customers have the purpose of door, one to shake hands with Datang are Forever Friend, step into the big good luck to followWing

公司成立以来一直是以诚信为高质量为主，主要经营鲜桔梗，干桔梗，桔梗丝，出口条药，菜药，我门可以根据客户的需求来加工不同类型的桔梗如：尺寸长度，大小，和桔梗虚多虚少，从而打造出定做产品，我门的宗旨是：让客户满意是我门目标，让客户有实惠是我门的目的，大唐一握手永远是朋友，蹋进大唐门好运永跟随

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。