作模型用的

Three cross-sections were made through crown and gingiva of the model tooth. Curve functions of axial buccal crown and gingiva contour of each section were acquired by means of curve fitting, and the angle of emergence pofile was calculated, which represents the degree of undercut.

以下颌第二前磨牙为研究对象，在牙列模型上通过牙冠部、牙龈作3个纵断面，用曲线拟和的方法得到每个断面的牙齿轴面外形及相应牙龈外形的曲线方程，以此分析两者之间的关系并计算牙冠起始外形角度，即倒凹程度的大小。

Leading resistant factor into the necessary condition can also enlarge the quadratic convergence region near optimal solution so that it is very efficient to use the known flash calculations at one condition to iteratively compute another optimal solution at other conditions where pressure, temperature and mole fractions of components are close to known ones respectively.

在极值必要条件式中引入阻尼因子能扩大真解附近的平方收敛域，尤其在利用已知条件下的汽液平衡结果作初值直接用极值条件方程迭代计算压力、温度和组成变化不严重的相邻点的汽液平衡极值解方面效果十分显著，适合于加快组分模型的计算速度。

The animal experiment stage: 40 rabbits underwent corneal epithelium curettement and limbal ablation to induce limbal stem cell deficiency and were randomly divided into four groups, simple amniotic membrane group, non-frozen cells group, glycerol group and dimethyl sulfoxide group(n=10 for each group). Searching for the activity of frozen and non-frozen cells more completely by transplanting subculturing cells and observing the accomplishment of cells function.

动物实验阶段：将40只角膜缘干细胞损伤的模型兔随机分成单纯羊膜组、未冷冻细胞组、DMSO保存细胞组和甘油保存细胞组，每组10只，用传代培养2周后的角膜缘上皮细胞作移植实验，观察细胞体外功能完成情况来进一步比较深低温保存前后角膜缘上皮细胞的活性。

The main research methods are:(1)Theory analysis:from the 2D plane geometry analysis, dots continuity characteristics are found. The first time irrational fraction algorithm is used in FM program.(2)Experiments reaearch:experiments of condition halftone function are designed under the cross-experiment principles. The first time variable information printer and C# language are used in experiment.(3)Data processing:new type digital density apparatus is used to measure data. Compare is used in processing data and error cause are explained. The main works as follows:The dot area percentage has been gained and new condition halftone function has been set up.(2)After being corrected, speed of irrational fraction algorithm has been compared with multiplicative congruence algorithm's.

本文的主要研究方法有：(1)理论分析：运用数字加网原理，从二维平面几何分析入手，借助实验验证研究网点连续特性；首次系统地把无理数取尾法随机数生成器引入到调频加网系统中，根据实验修正生成器的模型，运用统计假设检验理论，对生成的随机数序列进行统计假设检验；(2)实验研究：根据正交实验法则设计实验，首次采用可变信息印刷机(HP Laser PS印刷机)输出实验样张，克服了用传统胶印机作实验影响因素多的缺陷；采用新型数字式密度仪测量密度值，提高了数据精度；采用最新编程语言编写调频加网程序；(3)数据处理与分析：利用平均值比较法处理数据，对误差产生的原因进行讨论。

Within the WBEPM theory,the transition probabilities and oscillator strengths of some heavier and light atoms and ions are investigated.We also used the conceptions of spectrum-level-like series and iso-spectrum-level series to study the energy levels of some atoms.Based on the previous work,we used double generalized Laguerre polynomial to calculate the value for the ground-state energy of He atom.

本论文在郑能武教授提出的最弱受约束电子势模型理论基础之上，对若干较重和轻原子离子的跃迁几率和振子强度作了研究；引入类光谱态能级序列的概念和等光谱态能级序列的概念研究了一些原子离子的能级性质；并在前人工作的基础上用双广义拉盖尔函数对氦原子的基态能量做了计算。

A semi-analytical calculation method of bit-error ratio and Q-factor is proposed. Numerical algorithm of WDM signal propagation in a nonlinear, dispersive fiber is carefully improved, resulting in greatly reduced computing time.

将解析模型和计算机模拟结合在一起，对用正色散传输光纤和大负色散补偿光纤的10Gb/s WDM系统，在不同的色散管理条件下光纤非线性对系统性能的影响作了较全面的分析。

The evaluation model in the paper considers both the synthetic role of various disasters and socioeconomic level of disaster-influenced area, uses natural disaster index to indicate disaster hazard magnitude and to regionalize systematiclly taking Southern Sichuan.

本文提出的自然灾害综合评价模型，考虑了各种自然灾害的共同作用和受灾区域的社会经济水平，用自然灾害综合指数来表示区域自然灾害的危险程度，并据此作综合分区。

This paper develops a mathematical model for the solution to the longitudinal tooth curve of an internal gear shaver based on the simplified principle for space transmission of a helical gear pair without flank clearance,and proposes a calculating approach of the profile modification of the grinding wheel to be used for grinding the longitudinal tooth curve of the shaver.

用简化的空间螺旋齿轮作无侧隙啮合传动的原理，建立了求解内剃齿刀齿向曲线的数学模型，并给出了修磨这种齿向曲线的盘形砂轮的廓形计算方法。

It is especially suitable to deal with the complicated nonlinear problem-complex structure and property relations. In this paper it is applied to solve the fungicidal activity of aseries...

用该法处理硫代磷酰胺酯类衍生物杀菌作用的构效关系，并与逐步回归和偏最小二乘法作比较，模型的复相关系数R和剩余标准差Sy都较好。

With nonlinear regression analysis on each factor and multi- variates l inear regression on collectivity, this paper gives a mixed regression model.

通过先行建立每个影响因子的非线性回归。型，然后作总体线性回归。，首次给出了用混合回归模型预报赤潮的方法。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。