给...开孔

All is done in the mapping plane about the developed plane of acylindrical shell.Furthermore,applied orthogonal function expansion technique,the problem can be finally summarized into the solution of a series of infinitealgebraic equations.

在第四章中，在保角映射平面上给出了大开孔圆柱壳在外部载荷作用下，广义内力、边界条件以及孔边应力集中系数的一般表达式。

A saddle-shaped hole grooving machine for pressure vessel was introduced. A method for processing saddle groove and the designing of a technical background were put forward.

摘要介绍了一种压力容器壳体开孔马鞍形坡口加工机械的设计背景技术，给出了马鞍形坡口加工的一种实现方法。

Accordingly, the accident of sulfide stress corrosion cracking should be taken into account.The SSCC sensitivity and cracking time of 16Mn steel used to make the cold-high pressure segregator and common 16Mn steel in solutions with various H2S contents and pH values, simulated solution and operating solution were investigated by constant strain bend and slow strain rate test.Hydrogen diffusion coefficients of 16Mn steel, 16Mn steel and their welded seams were also tested by the electrolyte hydrogen charged method.Safety evaluation of the cold-high pressure segregator was given with above results.

针对制造过程中由于开孔失误而进行补焊的冷高压分离器在高压、高浓度的H2S环境的使用安全问题，采用了电化学充氢、恒应变和慢拉伸的实验方法，研究了制造冷高压分离器的主体材料16Mn钢和普通的16Mn钢及其焊缝的氢扩散系数，在不同H2S浓度、pH值，模拟冷高压分离器操作环境溶液和实际溶液中的腐蚀规律和硫化氢应力腐蚀开裂敏感性，结合实际腐蚀环境的检测和分析结果，对补焊后的冷高压分离器的使用安全给出了综合评估。

This paper made the value simulation about the flow filed around the net and non-net dumpsite, referring to dusting pattern to establish he source strong simulation pattern of material pilesraising the dust to discharge in the coal dump site that the US environmental protection bureauRecommended.

本文使用标准κ-ε模型对有网堆场周围的流场和无网堆场周围的流场进行了数值模拟，参考美国环境保护局推荐煤堆场起尘模式建立料堆扬尘排放源强模拟模式，给出了不同开孔率的防风网对静态煤堆场的抑尘率，为防风网的设置提供技术参数。

The underwater pipeline tapping machine meets working needs by introducing such design as using hydraulic system as power source, putting transmission box to the bottom of machine, setting safety clutch in feeding system, having fast translation function of the spindle, detecting the spindle translation with differential, using dial to display and seting feed depth.

水下管道开孔机以液压系统为动力，采用传动箱下置、进给系统中设置安全离合器、主轴带有快进和快退功能、差速器检测主轴的进给运动、刻度盘指示和设定开孔深度等设计方案，满足了水下管道开孔作业的要求。

Numerical results of dynamicstress concentrations in plates with cutouts are graphically presented and discussed.

作为算例，文中给出了平板开孔动应力集中系数的数值结果，并对计算结果进行了分析讨论。

Themapping function sequences including circular cutouts and elliptical cutouts aregiven in this chapter.

然后为方便地满足圆柱壳大开孔的边界条件，通过复变函数方法中的用来求解多边形映射问题的Schwarz-Christoffel积分表达式，将圆柱壳展开面上的非圆非椭的开孔边界曲线保角映射成为单位圆，给出了在不同开孔率情况下的关于圆孔和椭圆孔的保角映射函数的具体形式。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。