By means of a mass of shear strength test of rough cement face of concrete - bedrock , influences of cement face roughness of two mediums on shear strength parameter , shear deformation characteristics , shear failure mechanics are systemically studied . empirical relationship between fractal dimension of cement face roughness and shear strength parameters is established 通过大量的混凝土?基岩粗糙胶结面抗剪强度试验，系统研究了两相介质胶结面粗糙度对其抗剪强度参数值大小、剪切变形特征、以及剪切破坏机理的影响，建立了胶结面粗糙度分维数与抗剪强度参数之间的经验关系式。
Based on the liquid water content and optical visibility , the method for determining the parameters of gamma drop size distribution model of fog and clouds are developed , the drop size distributions for advection and radiation fog are obtained with empirical relations of the liquid water content and the visibility , the characteristics of drop size distribution for different kinds of fog are analyzed and discussed 提出了利用云雾含水量和能见度确定gamma云雾滴尺寸分布的方法，利用雾的含水量和能见度的经验关系，得到了辐射雾和平流雾的雾滴尺寸分布模型，并对不同类型雾的尺寸分布特征进行了分析和讨论。
Then , using statistical method , performance indexes are compared , and the prior layer setting is obtained . through elaborate indoor tests , the drainage performance , mechanics performance and durability of asphalt treated permeable material are researched . by statistical analyses of vast test data , the balance range of air voids is obtained , via performance tests in different saturation conditions , the durability of the material is gained 对沥青稳定碎石排水层混合料的材料组成进行了精心的室内试验设计，依据室内试验结果，对沥青稳定碎石排水层混合料的透水性能、力学性能和耐久性能进行了各种因素的影响分析，经数理统计分析获得了有关性能指标之间的经验关系，找到了透水性能和力学性能之间的平衡点。
We also use polynomial function to model the soil moisture under drip irrigation ; and the function will be useful for design the drip irrigation system and fertigation system . ( 2 ) the amount water added and the way of supplying water and fertilizer were two key important factors to affect the movement , transformation , and leach of urea - n in soil 比较了不同模型拟合的滴灌条件下土壤湿润锋的动态变化，认为多项式模型的拟合程度较好；同时建立了土壤湿润体水分含量( y )与径向距离( l ) 、垂向距离( h ) 、实验时间( t )之间的经验关系式。
The fog attenuations at infrared wavelength are computed and analyzed with the fog drop size distribution model of radiation and advection fog , the empirical relation of fog attenuation with water content or visibility are obtained at 10 . 6 urn wavelength , the relation for radiation fog have a good agreement with the relation obtained by experimental results 基于雾滴尺寸分布模型，对雾的红外辐射衰减特性进行了分析和研究，并给出了10 . 6 m红外辐射衰减与雾的含水量或能见度的经验关系，该经验关系与实验结果间有很好的一致性。
The reliability of secant modulus method is validated in which final consolidation settlement is computed . the experience formula of coefficient of permeability ( k , 0 ) and pore ratio ( e ) is presented and the experience expression of coefficient of permeability ( k10 ) and strain ( ) is offered too . lt is important to modity the acquiring method of coefficient of consolidation , because the method embodies that strain and pressure of consolidation effect on coefficient of consolidation 本文首先验证了用割线模量法计算软土地基最终固结沉降的可靠性；其次得到了渗透参数k _ ( 10 )和孔隙比e的经验关系，并且更进一步给出了渗透系数k _ ( 10 )和应变之间的经验公式，更重要的是对求取固结系数的方法给予了改进，该方法反映了固结系数随应变和应固结压力的变化规律。
Based on rain drop size distribution ( dsd ) data measured in qingdao , guangzhou and xinxiang , the radar reflectivity factor z for spherical rain drops , the radar reflectivity factor zh and differential reflectivity zdr for oblate ellipsoid rain drops have been calculated . the relation of reflectivity and rainfall rate for conventional meteorological radar and the relation of reflectivity , differential reflectivity and rainfall rate for multiparameter radar are regressed , the performance difference of two kinds of radar for measuring rainfall and difference for measuring rainfall in different regions are also discussed 基于我国青岛、广州和新乡地区雨滴尺寸分布数据，计算了球形雨滴雷达反射因子，椭球形雨滴雷达水平极化反射因子和差分反射率，回归给出了这些地区的常规气象雷达反射因子与降雨率的经验关系和多参数雷达水下极化雷达反射因子、差分反射率和降雨率关系，并对其测雨精度和地区差异进行了比较。
Second , the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model , which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system . third , the normal running process is analyzed and calculated by means of rational matching theory , which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator . fourth , the simulation software with dynamic characteristic is designed , which can be applied to calculate thernio - parameter of cryogen , air humidity and frost thickness under different initial and boundary conditions , and to carry out dynamic simulation under conditions of dryness , wetness and frostiness , at the same time , to achieve detection and simulation at any stage from starting to stopping 本文的主要内容如下： 1 )对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2 )对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3 )对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4 )编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。
In this paper the experimental research of hydra ulic oil used on a certain composite gearbox are carried on the experimental fo rm ulas are drawn respectively between viscosity 、 density 、 specific heat and temper ature the function of viscosity to temperature and pressure is deduced the com parative analysis among the new oil 、 used oil and ordinary antifriction oil ind icates the performance of the specitic oil is excellent these conclusions are b eneficial to the advanced analysis of the vehicle transmission system and formul ate the manual of relevant armored caterpillar 该文对某军用履带装甲车辆综合传动系统使用的液压油进行了试验分析，得出了这种液压油的粘度、密度、比热与温度的经验关系式，推导出了粘度在温度、压力综合作用下的函数关系，并对新油、旧油、普通抗磨液压油的粘度进行了对比分析，这对于使用这种液压油的传动系的分析计算和制定相关军用履带装甲车辆的使用规范提供了重要的理论依据
Abstract : in this paper the experimental research of hydra ulic oil used on a certain composite gearbox are carried on the experimental fo rm ulas are drawn respectively between viscosity 、 density 、 specific heat and temper ature the function of viscosity to temperature and pressure is deduced the com parative analysis among the new oil 、 used oil and ordinary antifriction oil ind icates the performance of the specitic oil is excellent these conclusions are b eneficial to the advanced analysis of the vehicle transmission system and formul ate the manual of relevant armored caterpillar 文摘:该文对某军用履带装甲车辆综合传动系统使用的液压油进行了试验分析，得出了这种液压油的粘度、密度、比热与温度的经验关系式，推导出了粘度在温度、压力综合作用下的函数关系，并对新油、旧油、普通抗磨液压油的粘度进行了对比分析，这对于使用这种液压油的传动系的分析计算和制定相关军用履带装甲车辆的使用规范提供了重要的理论依据
