直壁

U形渠道直壁槽式量水堰的流量系数和流速系数的探讨与计算

Discussion and Calculation of Discharge and Velocity Coefficients of the Straight Wall through Measuring Weir of the U-shaped Channel

本文首先总结了金属薄板直壁件的路径规划方法，即数控程序直接生成G代码的路径规划和UG直接造型的路径规划工艺，比较了两种方法的优缺点。

According to the character of CNC forming , route planning method is most important for straight-wall parts ' forming . Two got route planning methods are compared .

本文通过理论分析，推导了U形渠道直壁槽式量水堰的流量系数和流速系数的理论计算式，讨论了流量系数的变化规律。

The formulas of the discharge and velocity coefficients of the straight wall through measuring weir of the U-shaped channel are deduced by using theoretical analysis method and the behaviour of these coefficients is discussed in this paper .

AUTOFORM软件的模拟分析结果与理论分析相符，其中直壁部分回弹严重。

The simulation analysis results from the AUTOFORM software were in conformity with the theoretical analysis . The springback problem of the straight-wall portion of the S-rail part was more serious .

通过匹配渐近展开和格林函数的方法，借助保角交换和求解奇异Fredholm积分方程的技巧，获得了两层流体系统中弱非线性内波在台阶直壁处反射和透射的近似解。

The approximate solution for the transmitted and reflected waves wave at the vertical wall of the step is obtained by using the methods of the matched-asymptotic expansion and the Green function and some mathematical tech technique such as the conformal mapping theory and the singular Fredholm integral equation theory .

岩石锚喷直壁的稳定分析与设计

Stability analysis and design for vertical rock surface reinforced by Shotcrete

异形件斜孔冲裁模设计超长超薄铝合金直壁异形件加工

Machining of Ultra Long and Ultra Thin Al Alloy Straight Wall Special-Shaped Part

直壁段厚度略有增厚。

A slightly thickened in the straight wall .

一种新型的量水设备&U形渠道直壁槽式量水堰

A New Type of Flow Measuring Equipment-straight wall Trough Measuring Weir of the U-shaped Channel

上管-32毫米，7000系列直壁铝，低摩擦与凹陷梯度阳极。

Upper Tubes-32mm , 7000 series straight wall aluminium , low friction anodized with sag gradients .

优化了直壁筒形件的多道次数控增量成形工艺路径。通过实验验证了所优化设计的工艺方案。

The incremental forming equipment is made and the optimized process is validated by the experiment .

为了保证直壁部分的尺寸精度，要求毛坯尺寸计算正确。

In order to guarantee the precision of straight walls , it de-mands accurate calculation of blank dimensions .

弱非线性内波在台阶直壁处反射和透射的渐近分析

Asymptotic analysis for reflection and transmission of weakly nonlinear internal waves at the vertical wall of a step

金属薄板直壁件的成形是数字化渐进成形技术中的热点和难点之一。

It is a key and difficult point for sheet metal digital incremental forming to produce straight-wall parts directly .

分析了金属板料数控增量成形中板料变形的原理，探讨了不使用专用支撑而成形直壁筒形件的可行性和方法。

The feasibility and the method of using unsupported incremental forming process to from vertical wall cylinder part are discussed .

在金属薄板直壁件的成形中，最难解决的问题是无法直接成形出较高的直壁。

However , the taller straight-wall parts can not be produced directly , which is the most difficult problem to be resolved .

从杨森曾采用的平衡条件和常系数假定出发，本文用分段法推导裤型漏斗直壁和曲壁的贮料压力计算公式。

This paper derives the pressure formula of granular for trouser-shape funnel from equilibrium condition and assumption with constant coefficient ever adopted by Janssen .

那栋一面临直壁街一面临比克布斯小街的大楼房在朝园子的一面，有两个交成曲尺形的正面。

The large building of the Rue Droit-Mur , which had a wing on the Rue Petit-Picpus , turned two facades , at right angles , towards this garden .

大型贮器，如球罐、直壁罐；大型工程结构如水电工程闸门、海洋平台、大直径管道等。

Large containers such as ball or column oilcans , and large steel structure such as strobes of water and electricity project , ocean flat roof and large diameter pipes .

正如我们先头所说的，他望见有一个黑影把守在直壁街和比克布斯小街的转角处，便往后退。

As we have just said , on catching sight of that black silhouette standing on guard at the angle of the Rue Droit-Mur and the Rue Petit-Picpus , he recoiled .

本文通过建立直壁面液膜流动形状简化数学模型，较准确地反映了液膜流动和空气流动之间的相互作用关系。

In this paper , the simple mathematical model of the shape of the water film is established , and used to analyze the relation between the film flowing and the air stream .

比较而言，直壁ω型燃烧室最易制造，热应力较小，挤流作用明显，为最佳燃烧室方案。

By comparison , straight wall chamber ( type A ) is easy to be manufactured , has the lowest thermal stress and has obvious squish . Type A is the best combustion room choice .

介绍了金属板料数控渐进成形工艺的成形原理、变形分析、直壁筒形件成形的工具路径设计、实验条件及结果分析。

The forming principle , deformation analysis , the tool path design , the experimental condition , and the result analysis of vertical wall cylinder forming in NC incremental sheet metal forming process are presented .

给出了计算垂直荷载的土壤垂直压力因数曲线，讨论了考虑沟槽为直壁沟槽或斜壁沟槽、管道为刚性或柔性管道时的垂直荷载计算方法及适用条件。

Provides the curves of soil vertical pressure coefficient to calculate vertical load and discusses the calculation method and its application conditions for vertical or lean walls in pipe channels and for rigid or flexible pipes .

针对有些船舶如大型集装箱船的非直壁、船首大外飘等波浪载荷具有明显非线性，提出采用直接计算法进行疲劳强度分析，并提出了计算的一些具体内容和计算公式。

According to the facts that some ships such as contain ships with very large flare suffer the non-linear wave induced loads , a method of direct calculation for fatigue strength analysis of ship structures is put forward . In the analysis , the non-linear wave loads should be included .

翻腾的岩屑到达相对顺直的河道壁的地段。

The churning debris reached a relatively straight-wall segment of the channel .

透射电镜观察表明，最长的纳米碳管长度在8μm以上，直径在10nm左右，管形较直，为单壁与多壁的混合物。

The carbon nanotube samples observed by TEM were relatively straight , with longest length of over 8 μ m and diameter of about 10 nm , and consisted of both single-wall nanotubes and multi-wall nanotubes .

北壁中间砌成一个上下直通的凹形直槽，凹槽直壁与横梁组成的高表与台下石圭形成一组测量日影长度的圭表装置。

The center of the northern wall is built into a hollow groove that is perforated through from top to bot-tom , so the higher gnomon at the groove 's straight wall and the stone gnomon at the bottom constitute a se-ries of gnomon apparatus for measur-ing the length of the shadow cast by the sun .