矩形断面

压水室设计采用矩形断面、半螺旋形涡室。

The pressurized-water chamber design adopts rectangular section and half-spiral vortex chamber .

当小流量时水流动力轴线的位置取决于主槽的位置，当大流量时水流动力轴线的变化规律接近矩形断面的情形。

The position of power axis of flow is determined by main channel when runoff is small , while the change law conforms with the law of rectangular section when runoff is large .

应用三自由度强迫振动装置，解决了大攻角下弹性悬挂自由振动时存在的竖向运动失真问题，准确识别了大攻角下的H型和矩形断面杆件气动导数。

The forced vibration equipment with three degrees of freedom is applied to solve the distortion problem of vertical motion in free elastic suspension method , and the flutter derivatives of H-shaped and rectangular sections under large attack angle are accurately identified from the forced vibration testing data .

然后以简化的矩形断面隧道为对象，利用CFD数值模拟技术研究了隧道发生火灾时，隧道内烟气的蔓延规律，并在此基础上探讨了隧道临界风速问题。

Then , taking the simplified tunnel of rectangular cross-section for the object , the spread law of smoke during a tunnel fire was studied using the CFD numerical simulation technology , on the basis of which , the issue of critical velocity was explored .

利用LDV分别测量了离心泵最优工况和小流量工况下矩形断面蜗壳内3个断面的清水和粘油平均流动。

The flows of water as well as viscous oil in three sections of a centrifugal pump volute are measured by using two dimensional laser Doppler velocimeter ( LDV ) at optimum operating condition and partial loading points , respectively .

应用强迫振动装置上的天平测量节段模型的气动力时程曲线，实现了随攻角连续变化三分力系数的测量，并由升力时程曲线推算了多组H型和矩形断面的Strouhal数。

The aerodynamic forces of section model are measured by the force balance of forced vibration equipment , which is further used to estimate the Strouhal number of H-shaped and rectangular sections , and the measurements of steady aerodynamic force coefficient continuously varying with attack angles are realized .

矩形断面明渠流速分布特性的试验研究

Experimental study on distribution properties of velocity in rectangular open channel

矩形断面压力管道汇流口局部能量损失

Local energy loss at junction of pressurized pipes with rectangular cross section

矩形断面明渠中半圆形边墩周围流速分布特性研究

Flow Velocity Distribution Around Semicircle Cylinder Pier In Rectangular Channel

均匀湍流场下矩形断面流场及气动参数数值模拟

Simulation of rectangular section 's flow field and aerodynamic parameters in homogeneous turbulence

大尺寸矩形断面超声变幅杆固有频率的研究

A study to the resonant frequency of ultrasonic horns with large rectangular cross-section

矩形断面环形件弯曲成形过程中弹复问题的研究

Ring Shaped Oscillator In Rectangle Section Annular Part Bending Deformation Course Spring-back Problem Research

弧边矩形断面钢锭的研制

Development of rectangular ingot with arch edge

表皮结构由一种矩形断面的平坦的网状结构焊接或者拼装而成。

The face structure comprises a flat web of rectangular box sections either welded or bolted together on site .

根据矩形断面收缩水深的基本方程得出计算收缩水深的递推公式；

A recurrence formula for computing water depth at vena contraction is derived from the basic equation of water depth at vena contraction in rectangular channels .

通过建立一维涌潮数学模型，以概化矩形断面河道为对象，对不同糙率下的潮波变形进行分析比较。

Based on the ideal rectangular cross-section watercourse , a one-dimensional tidal bore model was established . The processes of tidal wave deformation under different roughnesses were analysed and compared .

用有限元方法对液压传动中异形断面&等腰三角形、梯形和矩形断面流道进行数值模拟.获得了不同流动条件下的流场；

The finite element method is employed to simulate numerically the non-circular cross section ducts , Such as the equilateral , terrace and rectangular cross section conduits used in hydraulic transmission .

在综采放顶煤工作面顺槽掘进过程中，由于顺槽煤层顶板松动破碎，并且顺槽采用矩形断面，顶板跨距较大，不利于巷道支护。

During the drivage of main-gate in long-wall face with fully mechanized caving mining , the gate is hard to support due to its loose and broken roof , large cross-section and long span .

该文对公路矩形断面渠道及涵洞具有净空高度条件下排水、输沙水力最优断面理论进行了分析，得出最佳宽深比设计参数。

The article analyzes the optimal drainage and sand-conveying hydraulic section theory under the clearance height condition for the rectangular sectional channels and culverts of the highways , and gives the optimal width-depth ratio design parameter .

并对库特剪切流流量的计算误差进行了分析，给出了该公式的适用范围，同时对有限宽度矩形断面管剪切流公式进行了曲线拟合，得到了便于工程使用的流量计算公式。

Further , we analyzed the error of the solution , and the range in which the formula is suitable is given . An appropriate formula which is easy to use in engineering was obtained based on the results .

质疑是否存在哑铃形或圆端矩形断面的拱肋抗弯截面模数的计算方法，指出了钢管混凝土拱桥存在诸多不安全因素；

Especially the paper queries whether there exists the bend section modular calculating method for dumbbell or round end rectangular section arch rib , to prove the existence of a lot of unsafe factors in the steel pipe-concrete arched bridge .

提出在自由出流条件下，按常规设计的闸墩结构和闸室上下游连接段为矩形断面的无坎宽顶堰，堰流流量系数m在036～0375之间取值更为适宜。

It is concluded that the flow coefficient in the range of 0.36 ~ 0.375 is suitable for broad crest ridge free weirs with a rectangular conjunctive section between the upper and lower reaches of lock chambers under free outflow conditions .

斜坡式防波堤矩形胸墙断面尺度的图表确定法

Chart Method for Determining Rectangular Breast Wall Size of Breakwater with Sloping Faces

矩形收缩断面水深三角公式本文给出矩形扩散消力池水力计算图解，本图解可用来（1）计算泄水建筑物下游收缩断面水深。

THE CIRCULAR FUNCTION FORMULA OF WATER DEPTH OF RECTANGULAR VENA CONTRACTA This paper presents a diagram for hydraulic calculation of rectangular expanding stilling basin .

矩形建筑断面长宽比的增大则使阻力系数的平均值、根方差减少，而升力系数的根方差增大；

With the augmentation of the side ratio of the rectangular buildings , the mean and RMS coefficients of the drag decrease and the RMS coefficients of the lift increase ;

理论分析认为求解各可调辊的压下挠度时，可以不考虑腹板的影响而按翼缘组成的“矩形”断面来进行。

According to theoretic analysis , computing the bending deflection of every roller is enabled to ignore the effect of the web and only allow to the rectangular section made up of flange plates .

矩形流道断面以正方形为最优，且存在最优角圆，使单位长流道沿程水力损失最小。

The optimum passage section figure of rectangle is square , and the rectangle has 4 optimum comer circular arcs which make the hydraulic loss of friction loss of per unit length passage the least . angle .

矩形排水暗沟断面尺寸的计算

Calculation of section size on rectangular sewer

文章推导较简捷的公式，对梯形、矩形和圆形断面，采用通用的计算程序，以期达到准确的计算结果。

In this article , the authors want to deduce a brief formulation , and use all-purpose program to get exact result for echelon , rectangle and rotundity cross section .

采用强迫振动法研究了主动格栅紊流对理想薄平板，矩形钝体断面以及流线型箱梁断面颤振导数的影响。

The effect of active grid turbulence on the derivatives of thin plate section model , section model of rectangular prism and streamline model with box girder section are investigated by the forced vibration method .