并流

This paper then compares three kinds of power conversion circuit applied in it and advances a main circuit which is based on IGBT's power grade nowadays and is applied in high power direct-driven grid-connected wind turbine. It is made up of a six-phase rectifier, two paralleled BOOST chopper circuits and two paralleled SPWM inverters.

文章在比较此种风力发电机的三种类型变流电路拓扑结构的基础上，提出了一种在考虑现有开关器件功率水平的情况下符合大功率直驱并网型风力发电机要求的变流电路拓扑结构，即采用&六相不控整流+两个并联的升压斩波+两个并联的三相SPWM逆变&的电路结构，并对其各部分电路的工作原理进行了分析。

Transport stream decoding is SDTV and HDTV source decoding software. It can decode the transport stream files in hard disk into DTV signal then broadcast, fast forward, fast rewind or pause them on screen.

传输流软件解码是一套标清和高清信源解码软件，能将硬盘上的传输流文件解码为数字电视信号，并可以在屏幕上对其进行快进、快退、暂停、播放。

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。

According to the research of orthogonal drying experiments, the effects of the temperature of drying room、nitrogen humidity and gas velocity on...

从物理意义出发，得到了临界流化气速和临界流化压降的表达式，并由此分析了本实验对振动流化床流体力学特性研究的实验结果。

According to the research of orthogonal drying experiments, the effects of the temperature of drying room、nitrogen humidity and gas velocity on drying...

从物理意义出发，得到了临界流化气速和临界流化压降的表达式，并由此分析了本实验对振动流化床流体力学特性研究的实验结果。

Last, besides realizing the system function, author anatomists the lack of this workflow management system, and then provides a way to improve the system. At one time, author makes an appraisal for the role that plays in the system by using workflow techniques.

最后，作者在实现功能的基础上，剖析了本系统中工作流处理系统的不足，并提出了相应的改进办法，同时对本工作流系统在整个系统中的作用做出了评价。

The applications of modified Jameson's scheme to the complex flow around the missiles with canards and tails, result in good agreement between computations and experiment data of the standard missile model of U.S.A..

将改进的Jameson格式应用到多翼导弹的三维流场计算中，并使用分区技术和三维椭圆微分方程数值网格生成技术以精确模拟此复杂构形的复杂流态，计算结果与美国导弹标模的实验吻合很好。

Calibration of model parameters and its application of calculating the benefits of water reduction in three small catchments i.

根据治理与尺度对黄土区产流模式的影响，建立用地评价水土保持的措施减水效益的超蓄产流模型，并将径流成份直接区分为地表径流和地下径流。

With famous flow-field analytic software CFX we also simulated the flow's details in the homogenizers head, and analyzed it's infection to the homogenization process using the simulation results. We also established the dynamic model of the stator-rotor of shear homogenizer system, and analyzed important factors that affect the system's stability with the help of the poincarémaps, axes contrails, phase plane portraits, times-history and amplitude spectrum which were attained by Fortran language and Matlab program.

然后，本文运用商业通用流体动力学分析软件CFX对均质头内部的流场进行了仿真模拟，并与数学模型相结合，探讨了剪切式均质机内部的流场对均质效果的影响，得出提高转速是提高均质机效率的关键，但是转速的提高又直接关系到系统的稳定性，于是紧接着建立了剪切式均质机转子系统的动力学模型，经无量纲化和必要的简化后再运用Fortran语言和Matlab软件对该模型编写相应的程序，得到了庞卡莱图，轴心轨迹图，相图，波形图，频谱图等图谱。

Based on Darcys law and material balance principle, mathematical model of three-dimensional three-phase was derived in porous medium with artificial fractures, and the gravity was considered in the model.

根据物质平衡原理和达西定律，考虑基质和人工裂缝作用下三维三相渗流模型，并考虑了重力作用影响，结合应变孔隙度模型、应变渗透率模型，建立了流固耦合整体压裂数学模型。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。