结构公式

The metabolic rule of the density of equivalent of fluid of artesian well of well key point that designs method and double gradient according to structure of traditional well body, derivation gives the computational formula that deepness enters below bushing.

根据传统井身结构设计方法和双梯度的井眼钻井液当量密度的变化规律，推导出套管下入深度的计算公式。

Second, considering the influence of well resistance, smear effect and structure breakage of thick soft clay, the equivalent calculation method is proposed. That is, the partially penetrating sand drain ground is viewed as the double-layered ground, and its consolidation is analyzed with 1-D consolidation theory, through the transformation from 3-D consolidation to 1-D consolidation in the region of sand drain. This can overcome the disadvantage that the excess pore water is discontinuous between the region of sand drain and under-lying soft layer. To the double-layered ground, based on the consolidation mechanism under surcharge, the excess pore water pressure calculation formula is deduced under the condition of multilevel equably loading or unloading, which perfects the consolidation theory.

然后，在充分考虑竖井区井阻、涂抹作用以及土体结构损伤破坏对固结影响的基础上，将未打穿竖井地基合理地转化为双层地基，按一维固结理论计算，克服了传统固结计算方法在竖井处理区与下卧层交界面处存在孔压间断的缺点；在此基础上，从超载预压法的基本原理出发，分析了双层地基超载预压固结、沉降机理，推导了多级等速加、卸载情况下双层地基的固结计算公式，进一步完善了双层地基固结理论。

The main works of this paper are as follows.First, according to the three-step method, 1-D unsteady flow model in river network is introduced. A new topological structure is presented to describe and store the topology information and data in river network ,which realises the connection between GIS and the numerical program of hydraulic calculating and turns the program into a universal one .A new formula of internal boundary conditions with double-recursion algorithm is deduced, and the relationship of recursive coefficient between imaginary channel length and non-imaginary channel length is presented ,which makes sure that the model can comprise the numerical simulation of the internal boundaries such as side pipe outflow ,barrage, slice gate and drainage pump station.

主要工作如下：(1)根据三级解法建立了一维河网非恒定流模型，并提出了一种新的数据结构来描述和储存河网拓扑信息，方便了GIS平台和数值计算程序的衔接，实现了三级解法程序的通用性；从河段方程组出发，根据虚设河段法推导出了内边界条件的双追赶法公式，指明了虚设河段的追赶系数和非虚设河段追赶系数的关系，从而使模型可以模拟集中旁侧入流、堰、闸、水泵等内边界对行洪过程的影响。

Based on experimental data from laboratory and field experiments, the relationship between rainfall recharge and groundwater level under farmland drainage is analyzed in this paper.

以室内一维土柱试验和室外水平衡小区观测资料为基础，对农田排水条件下降雨入渗补给与地下水埋深关系进行了分析，根据降雨、蒸发与地下水埋深关系相似的规律，仿照国内外排水计算中较为广泛应用的阿维里扬诺夫经验公式的结构形式，建立起降雨入渗补给与地下水埋深的关系，并采用室内外试验资料对该关系式进行了验证。

It analyzes a hydraulic elevator car frame used in the museum, sets up its multi-loops structure and variable working conditions load.

某博物馆液压电梯轿厢架具有多重框架的结构特点和变工况的载荷特征，传统公式计算法难于进行应力和变形分析。

Calculation formula of height-span-ration of supported beam can be directly deduced through controlling local stress in the end of the wall beam.

本文作者运用弹性地基梁理论及《砌体结构设计规范》中关于墙梁设计的有关规定，通过控制墙端局部压应力，可直接推导出托梁高跨比的计算公式。

We focus on resolving the following problems in FTP, that is how to guarantee the measurement accuracy of FTP when the connect line between the exit pupil of the projecting lens and that of the entrance pupil of the imaging lens is not parallel to the reference, or the two pupils are not coplanar, or neither the connect line parallel to the reference nor the two pupils coplanar.

推导出了适用范围更广泛的变形条纹描述公式和相位计算方法以及相位—高度映射算法。对于传统的傅里叶变换轮廓术测量系统而言，由于要求投影仪出瞳与摄像机入瞳连线与参考面平行，而且要求投影仪光轴与摄像机光轴共面，所以它可以被看作是本文所提出系统结构在该种情况下的一种特例。

After basic theory and definings of Voronoi diagram and also parameterized bisectors have been analyzed,two main algorithms of simple-connected at present have been compared;adjust the algorithm of initialization and data construct so as to obtain the algorithm could used in practice; extand the idea of wavefront-propagation algorithm to computing multi-connected voronoi diagram.

通过对Voronoi图的基本理论、定义和参数化平分线公式的分析，以及对两种主要单连通域Voronoi图算法的比较，作者改进了初始化算法和数据结构，得到便于工程应用的单连通域Voronoi算法，并将波阵面传播的思想扩展应用到多连通域的Voronoi图计算，形成新的多连通域问题算法。

Then a solution of CAD/CAM of the camis put forward. The following work has been completed. Based on analysis of transmission, structure and profile formation principle of thecam, the basic kinematic formula of the gear indexing cam mechanism isdeduced. Furthermore the space meshing contact equation of cam profile and theroller is formulated.

在此基础上提出了弧面分度凸轮的CAD/CAM解决方案，论文得到如下主要结论：在对弧面分度凸轮传动形式、结构和廓面成形理论分析的基础上，推导出了弧面分度凸轮机构的基本的运动学公式，凸轮廓面与滚子的空间共轭接触方程。

Meanwhile, compared with the data of stability freezing period from Hequ region in the Yellow River, the result shows that the proposed form of formula is rational and can offer reference to the calculation of ice discharge in the during freeze-up.

同时对比了黄河河曲段稳封期的实测资料，结果显示这一计算输冰量公式的结构形式是合理的，可为天然河道稳封期输冰流量计算提供参考。

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。