查询词典 unique solution

Therefore,it is necessary to research diffusion equation for suspended sediment because it describes the sediment move process in the water body.The equation is a various coefficients second-order linear partial differential equa-tion,such equation under complex boundary condition is very difficult to get its analytical solution,while its numerical solution relative analytical solution is more easier and has the obvious superiority:simple,the computation convenience.but to get a kind of difference format which is good accuracy and stability is not easy.

泥沙扩散方程实际上是一个变系数的二阶线性偏微分方程，这样的方程在各种复杂边界条件下求解是十分困难的，求它的解析解在数学上存在着难以克服的障碍，无法求出其精确解，因此常用数值方法求它的近似解，相比较而言，数值方法有着明显的优势：即简单灵活、计算方便快捷，但要寻找一种精度高、稳定性好、计算方便的差分格式也并非易事。

Use the abstracts to prepare a given thickness water solution. Perfuse the solution into the rat's stomach, it can obviously show that this solution can restrain the UCP2 in the rat's kidney.

用该提取物配置成一定浓度的水溶液给小鼠灌胃，发现能够显著的抑制小鼠肾脏中UCP2的表达。

According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

基于平面截面假定，弹性杆的位形表达为截面的弧坐标历程，根据平衡微分方程得到了两端受力螺旋作用时的直线平衡特解，导出了线性化扰动方程及其通解，积分常数根据两端铰支时的边界条件确定，并根据其存在非零解的条件得到弹性直杆精确模型的Greenhill公式，表明稳定域为一对称的封闭区域，拉/压和剪切对稳定性的影响取决于：拉/压柔度与剪切柔度之差，抗弯刚度和杆长这三个因素

In the solution process the initialization two populations, separately will select the different overlapping variation probability, after each time will iterate the sufficiency high individual carries on the first populations in sufficiency low individual with the second population in the exchange, and will preserve each center group the optimal solution to the outstanding person population, by will solve the tradition genetic algorithms to be easy to appear precociously, will be easy to fall into the partial optimal solution question.

即在求解过程中将初始化两个种群，分别选取不同的交叉变异概率，在每一次迭代完后将第一个种群之中的适应度较低的个体与第二个种群中适应度较高的个体进行交换，并且保存每个种群的最优解到精英种群，以解决传统遗传算法容易出现早熟，容易陷入局部最优解的问题。

In the solution process the initialization two populations, separately will select the different overlapping variation probability, after each time will iterate the sufficiency high individual carries on the first population's in sufficiency low individual with the second population in the exchange, and will preserve each center group the optimal solution to the outstanding person population, by will solve the tradition genetic algorithms to be easy to appear precociously, will be easy to fall into the partial optimal solution question.

即在求解过程中将初始化两个种群，分别选取不同的交叉变异概率，在每一次迭代完后将第一个种群之中的适应度较低的个体与第二个种群中适应度较高的个体进行交换，并且保存每个种群的最优解到精英种群，以解决传统遗传算法容易出现早熟，容易陷入局部最优解的问题。

By means of the comparison principle and the method of upper and lower solution,the corresponding sufficient conditions under which the models have a solution or no solution are obtained. If other parameters are given,the controllable parameters such as the population of release and the times of impulsive harvest are estimated respectively.

基于比较定理和上下解方法，分别获得了模型有解或无解的充分条件，估计了相关可控参数，即脉冲投放模型中的投放量以及脉冲收获模型中的脉冲收获次数。

In order to produce the electrolytic manganese from the absorption solution of flue gas desulfurization with pyrolusite pulp, the absorption solution should be pretreated to remove the Fe2+ ion and the heavy metal impurities in the solution.

对"软锰矿浆烟气脱硫制取电解锰、高纯碳酸锰及硫酸铵的废气脱硫资源化"体系中脱硫吸收液制取电解锰的工艺进行了实验研究。

The blank group, the pure chondrogenic inductor group and the group of the G ranula of P enetrating Bone and Removing Pain mixed with chondrogenic inductor. We adopted pro-culture solution, pure chondrogenic induced culture solution （ TGF-β310ug/L , Dex10-7mol/L , VitC50mg/L ） and the chondrogenic induced culture solution which included the serum of the G ranula. All groups were cultivated in 50ml cell culture bottles. The effects of the G ranula of P enetrating Bone and Removing Pain on chondrogenic phenotype differentiation of BMSCs were investigated after being cultivated for 1, 2, 3 weeks, then cells observed by inverted phase contrast microscope and immunocytochemical stain.

3将第2代SD大鼠BMSCs分为空白对照组、单纯软骨诱导剂组及透骨消痛颗粒含药血清加软骨诱导剂组，采用原培养液、软骨诱导培养液（TGF-β310ug/L，Dex10-7mol/L，VitC50mg/L）及透骨消痛颗粒含药血清的软骨诱导培养液，50ml细胞培养瓶内进行培养，1、2、3周后通过倒置相差显微镜及免疫细胞化学染色等实验技术，研究透骨消痛颗粒对BMSCs诱导成软骨细胞的影响。

The variation of pH and conductivity of various phosphate solution with the solution temperature were obtained based on the physical chemistry theory and ionization equilibrium theory in electrolytic solutions, and be testified experimentally under radiation of ultrasonic wave. The pH was a linear function with the reciprocal of thermodynamic temperature, and the conductivity was a linear function with the temperature in phosphate solution.

三、超声波对双水相系统组成物质、两相组成及溶质分配影响的研究根据物理化学原理和电解质溶液电离平衡理论分析推导和实验验证，揭示了超声波作用下不同组成磷酸盐溶液的pH值和电导率随溶液主体温度变化的规律：磷酸盐溶液的pH值与溶液主体绝对温度的倒数成线性关系，磷酸盐溶液的电导率与溶液主体温度成线性关系。

The results show that the nine Sn-Sb alloys at temperatures ranging from 923 to 1123 K are very close to the regular solution,and are also an actual solution with larger negative deviation from ideal solution.

结果表明：在923－1123K内Sn－Sb合金在整个浓度范围内较为接近规则溶液，同时仍为对理想溶液具有较大负偏差的实际溶液。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。