涡

Products are widely applied to various: bend, water, stamping products, electronic products, and promptly, pen holder, piston, banding belt, clamp, toys, kitchen equipment and accessories, frame, welcome, vortex spring, tape, timer and starter, etc

产品表面有2B，BA，2B光亮，8K镜面等，产品广泛应用到各类：折弯，水涨，冲件制品，电子产品、制管、弹片、笔夹、活塞环、捆扎带、卡箍、玩具、厨房设备、纺织机配件、综丝、洗尘器、涡形弹簧、卷尺、定时器和启动器等

Results indicate that WRF and MM5 both can imitate distribution and tendency of the rain belt of this storm rainfall course.

结果表明：WRF和MM5都能较好的模拟这次暴雨过程雨带的分布和走向，而WRF能更好的模拟降水中心的位置和雨量；与暴雨过程相联系的低空急流和涡度场等分布特征的模拟，WRF模式亦优于MM5模式。

Tandem bluff bodies.It is found that:（1）occurrence of the self-excited flow between two tandem bluff bodies depend strongly upon:the Reynolds number, the streamwise spacing between two tandem bluff bodies, the vortex formation length of the single upstream bluff body, and the characteristic length of the downstream bluff body.

本实验结果显示：（1）双钝体间具有自激式振荡的流场特性归纳如下：雷诺数、双钝体间的纵向间距、上游钝体的涡漩形成长度、下游钝体相对之特徵尺寸等均是影响双钝体间自激式振荡特性的重要参数。

Professional production: tension springs, pressure springs, multi-project spring, scroll springs, plate springs, leaf spring, butterfly springs, bell, candle cup, hinge, wind bell tube, aluminum chain, twisted chain, wave sub-chain, O word chain , snake chains, axes

专业生产：拉力弹簧，压力弹簧，多工程弹簧，涡卷弹簧，板弹簧，片弹簧，蝶形弹簧，铃铛，烛杯，合页，风铃管，铝链，扭链，波子链，O字链，蛇链，轴心，异型螺丝，螺母，螺钉等精密五金零部件。

The time-trace circular cylinder movement and vorticity structure which obtained in physical experiments are also captured in the present simulation.4, Another numerical investigation is also conducted on VIV response of an elastic mounted circle cylinder under planar shear flow conditions.

随着剪切率的增加，圆柱体的运动形式表现出一种全新的轨迹。5基于切片理论并结合有限体积法和动力有限元方法，成功建立了深海立管涡激振动响应的时域计算模型。

Based on finite element method,stiffness characteristics were investigated under different whirling angle, pedestal parameters ,and fit clearance,to present guidance for design of elastic ring.

本文针对两种弹性环刚度的计算方法——解析法和有限元法进行了对比，分析了各自的适用条件，并基于有限元法分析了涡动角、凸台参数和配合间隙对弹性环刚度的影响，为弹性环的结构设计提供了参考。

The supersonic flow and combustion were simulated by the method of large eddy simulation.

并采用大涡模拟方法数值模拟了超声速流场中气动斜坡的流动及燃烧特性。

Applying finite element method,the dynamic characteristics of drill string with cone bit in straight hole were simulated,and the whirl,deformation and the dynamic stress in air drilling were compared with the ones in drilling fluid drilling .

应用有限元方法，仿真了空气钻井时斜直井眼中带牙轮钻头钻柱的动力学特性，比较了空气钻井和钻井液钻井条件下钻柱的涡动、变形以及动态应力状况，探讨了空气钻井钻柱失效的动力学机理。

As a preliminary theoretical exploration, a limited series of stream function was employed to study the characteristics of the reattachment boundary layer. The tentative analysis showed that the reattachment boundary layer of the circular cylinder, so long as it began at the effective reattachment region discussed above, would be developing to its reseparated point downstream the cross section of the cylinder, which essentially gave the new idea RCDR a theoretical cycle.

本文提出的&再附—减阻&机制可表述为：柱面上扰流元件后向锐缘处诱发的流动分离，既改变了柱面压强分布格局，又破坏了柱面附近的流动状态；若扰流元件锐缘后方流动在圆柱壁面上再附，形成再附边界层，再附边界层将沿流向发展，直至越过柱面最大迎流截面之后，才从圆柱面上分离，致使分离流的尾涡区变窄，绕流阻力降低。

In the center of the cyclone, the vortex are energetic and have low frequency and high spectrum.

在分离器的中心区域，频率低，谱值较高，属含能涡区。

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