参数方程

The design mainly works on many factors which effecting the volume efficiency of fracturing pump. These factors are working conditions of the pump,imbibitional valve,expulsive valve,clearance volume,sealing property, condensability of influent, liquid leakage and elastic defletion of pump cylinder. Based on these facors, we should induce the efficiency expression, famulate differential eguation and emulational mathematical model of fracturing pump.

本设计主要针对影响压裂泵容积效率的因素如：泵的工作情况、吸液阀结构参数、余隙容积、密封性能、液体的可压缩性、液体泄漏、泵缸的弹性形变等方面进行分析，在此基础上导出效率的表达式，建立微分方程，并建立压裂泵效率仿真的数学模型。

According to the geometrical principle of conical milling cutter with equal helix angle, a new process of rough machining of conical milling cutter with equal helix angle on universal milling machine by using additive equipment is presented.

根据等螺旋锥铣刀几何原理，提出一种借助附加装置在万能铣床上进行等螺旋角锥铣刀粗加工工艺，介绍了该方法加工锥铣刀时工作铣刀的运动方程；给出了附加装置的设计原理，通过对用此方法加工出的铣刀参数进行测试，证明了这种方法的可行性和实用性。

The horizontal universal milling machine technological transformation based on Mitsubishi PLC;2. Analysis of some important points for makinghelical gear on universal milling machine ;3. According to the geometrical principle of conical milling cutter with equal helix angle, a new process of rough machining of conical milling cutter with equal helix angle on universal milling machine by using additive equipment is presented.

根据等螺旋锥铣刀几何原理，提出一种借助附加装置在万能铣床上进行等螺旋角锥铣刀粗加工工艺，介绍了该方法加工锥铣刀时工作铣刀的运动方程；给出了附加装置的设计原理，通过对用此方法加工出的铣刀参数进行测试，证明了这种方法的可行性和实用性。

First,the planar waveguide models for Rotman lens and its feed lines which incorporate the dispersion effect with frequencies are set up.Then the aperture electric fields at lens ports are expanded by appropriate waveguide mode functions and substituted into the contour integral equation.The multimode scattering matrix of the lens can be acquired by solving the contour integral equation by using Galerkin method.

首先建立了考虑色散效应的透镜的等效平板波导模型，然后选择适当的波导模式函数展开透镜端口上的场，并利用Galerkin法求解其边缘上电场满足的轮廓积分方程即可得到透镜的多模式散射参数。

Fourthly, Broyden iterative method is studied to solve nonlinear equation with parameters and the existence and convergence theorem is also given.

第四章的主要结果：研究用Broyden迭代求解带参数非线性方程，在弱条件下给出Broyden迭代格式的存在性和收敛性定理。

In the basis of Bayes principle, the linearized Zoeppritz equation and convolution model are applied to obtain the posterior probability density of the lithology model.

在贝叶斯原理的基础上，通过Zoeppritz方程简化公式及褶积模型建立反演参数的后验概率模型。

Among the 10 descriptors, the coplanarity of three phenyl substituents with the imidazole ring, the hydrogen-bond acceptance, the molecular weight and logP are the most important factors for the modulation efficacy.

借助半经验分子轨道法AM1和从头计算法RHF/6-31G计算得到分子的多种描述因子，采用多元线性回归方法进行了结构药效分析，基于分子的结构参数、接受氢键的能力、脂水分配系数等对药物分子半有效剂量的影响提出一套拟合效果比较理想的构效关系方程，其复相关系数和标准偏差分别为0.897和0.323。

According to the thermal process of transformer core and winding,this paper analyzes the compositions of core loss and load loss and their impacts on top oil temperature and hot-spot temperature of a transformer,and discusses the physical meanings of the parameters of the hot-spot temperature calculation equation recommended in the standard GB/T 15164-1994(loading guide for oil-immersed power transformers).

根据变压器铁心和绕组的发热过程，详细分析了变压器铁心损耗和负载损耗的组成以及其对变压器顶层油温和热点温度的影响，从实际物理意义的角度详细解释了GB/T 15164-1994《油浸式电力变压器负载导则》推荐的绕组热点温度计算方程各参数项的含义。

The application of Karhunen-Loeve expansion to simulating the soil parameters random field is researched;and the characteristics of the KL decomposition are analyzed;and the Galerkin finite element method is adopted to solve the integral equation numerically in the irregular region and for arbitrary covariance function and to simulate the anisotropic conductivity field.

研究了Karhunen-Loeve展开在土性参数随机场模拟中的应用，分析了KL展开的特点，针对不规则区域和任意类型协方差函数提出了积分方程的Galerkin数值解法，模拟了土壤渗透系数各向异性随机场。

This paper suggested with the crepe effect looks on as guiding style of crepe de chine and the handle look on as its auxiliary style.

只有能够同时满足这两个方程的工艺结构参数才能得到良好的绉效应和手感。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。