涡

The measurement methods of WK include the way of veins and fibers,the rotated porphyroblast approach,the method based on the relation between quartz C axis fabrics and strain ratio,the method based on the relation between oblique grain shape and quartz C axis fabrics,and the method of ultimate Mohr circle.

文章介绍了涡度的具体测量方法，即张裂脉中纤维法、旋转残斑法、石英C轴组构与主应变比值的方法、石英C轴组构与斜列颗粒形态的方法等。

The induced effects of vortex tubes and belts in the process of vortex reconnection are important.

强调了诱导作用在涡重联中的重要性。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

Through 2D axial symmetrical and 3D scarfed reversal nozzle calculating, the main flowfield characters were given, and compared with the experiment data for validation. Then, the program was given, which can well predict the performance of the scarfed reversal nozzle. In this paper, the flowfields of open cavities with different structures and different parameters were calculated. Some new, full and more reasonable mechanism interprets were given. We think that the essential cause of pressure oscillatory is coherent effect of wave, eddy and cavity structure, but the procedure is different with different cavity structure, it can not use single procedure to described.

通过对二维轴对称和三维斜切反喷管的计算分析，本文给出了流场的主要特征，并采用实验数据进行了验证，形成了分析斜切反喷管可靠的应用方法；本文通过对不同结构形式、不同参数的二维、三维非定常超声速开式空腔流动进行的计算分析，提出了较为全面、合理的空腔压力振荡循环机理的解释，本文认为压力脉动本质上是波、涡以及结构之间相互的干扰和耦合，但干扰的具体过程随空腔结构的不同差别较大，不能采用单一的规律进行描述。

In Chapter 5, through analysis, it shows that the corresponding relation is very well in latitude zone between Asian strong seism in wintertime and the China summer main rainfall belt.

第5章通过对1951～2000年亚洲冬季强震和地热涡资料的分析表明，冬季亚洲强震所在纬度与我国夏季主雨带的纬度有相当好的对应关系。

The positive centers of ζ and ζ(subscript MPV1) and the negative center of ζ(subscript MPV2) distributing on the dense isoline zone of equivalent potential temperature at the upper level slantly spread from the upper down to low troposphere a- long the dense isoline zone.

干空气侵入在这次暴雨过程中有重要作用，对流层高层西风分量下传将高纬高层高位涡干空气带到低纬暴雨区低层，促使对流层低层对流发展，从而产生强降水。

It was a big squarish frame house that has once been white, decorated with cupolas, and spires and scrolled balconies in the heavily lightsome style of the seventies, set on what once been our most select street.

那是一幢过去漆成白色的近似方形的小木屋，坐落在当年一条最考究的街道上，还装着十九世纪七十年代风味的圆顶，尖塔和涡形花纹阳台，具有庄严而轻快的气氛。

Project content synopsis : We will build a branch factory of Guoyang Kangle flour Co.,Ltd., stressfully improving product quality and grade.

项目内容简介：建涡阳康乐面粉有限公司分厂，重点提高产品的质量和档次。

Dome stake-What do we know about this stake. Any specifications like you sent me on that one book? Paint- Is it lead free. Strength of the swirly loop thing at the top. What point will it break? Paint chips easily... what's up with that?

圆形顶树桩，我们知道这个树桩，就像你寄给我的那本书上的任何规格，颜料不含铅，顶部成涡形环，什么点它会倒，颜料很容易脱落，这是什么原因？

The intensive southwest wind jet stream accompanied by the depression is not only the condition of development and maintenance of low vortex and MCC but also the transportational zone of lots of water vapor and non-stable energy.

在MCC的活动中，低空急流始终与低压相伴，急流中心强度达20m/s，急流轴较为宽广和深厚，指向低涡。在水汽和能量的聚集区，形成MCC。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐