查询词典 vortex sheet

Through solving the nondivergent inviscid linear vorticity equation in cylindrical coordination of barotropic atmosphere with WKBJ method, the authors point out that one kind of wave, named vortex Rossby wave, which is similar to planetary wave, exists in hurricane, its formation is due to the gradient of vertical vorticity component of basic state.

作者中文名：钟科；康建伟；余清平摘要：文中从柱坐标系下的正压无辐散涡度方程出发，用WKBJ方法求解方程，发现在飓风中存在类似于行星罗斯贝波的涡旋罗斯贝波，这种波的形成主要是由于飓风中基态涡度垂直分量的径向梯度所决定。

Poleward ozone flux increased because of the polar vortex breakup.

由于增温时极涡的减弱和崩溃，平流层向极地的臭氧通量增大。

Then the flow in the curved pipe and reducing pipe was simulated through using CFD software, know that fluid passing curved pipe, reducing pipe can form secondary flow, vortex shedding, circumfluence, occur separation of boundary layer and periodic circulation flow, make the fluid pulsant, then cause the pipe vibrancy.

然后再应用通用CFD软件对具有弯曲和变径的热风炉管内流场进行模拟，得到当流体流过弯管、文氏管后形成了二次流、环流，并发生边界层分离和周期性旋涡脱落，它们会使后面的管流处于脉动状态，脉动状态的流体在管内流动时，会引起管道系统产生振动。

Pyrology ; Vortex tube ; Energy separation ; Nozzle ; Temperature effect

热工学；涡流管；能量分离；喷嘴；温度效应

Keywords: pyrology, vortex tube, experimental investigation, rectifier,energy separation performance

对整流器及其叶片角度对涡流管能量分离性能的影响，整流器对涡流管的长径比的影响进行了实验研究，并将自行设计加工的带有上述整流器的涡流管与artx公司生产的同类型涡流管进行了对比实验。

This thesis explores the feasibility of using synthetic jet actuators for the propulsion of small underwater vehicles. This work was inspired by the widespread use of pusatile jet propulsion by sea creatures such as squid, salp, and jellyfish. The jets created by these animals utilize vortex rings for thrust production.

由於养殖渔业具有短期供给缺乏弹性、易腐败、不易储存等特性，更因为养殖业的交易性质，大多是在货到当天立即透过价格的调整，将到货量全部结清，所以数量与价格的关系，应该是数量影响价格，故本研究透过逆需求系统求算所有参数。

At low temperature, the system undergoes three phase transitions. With the increase of the current, from the moving vortex glass, the system is first driven to the moving Bragg glass, then to the moving Smectic, and finally melts to the moving liquid.

在低温下系统经历了三次相变：随电流的增加，系统首先从运动涡旋玻璃相转变为运动Bragg玻璃相，再转变为运动Smectic相，最后融化为运动液体相

The factory had polish production equipment, complete testing equipment and more than 160 sets of special equipment, such as vacuum induction furnace, medium-frequency induction furnace, centrifugal pouring machine, automatic welder, direct-reading spectrocomparator, endoscope and vortex flaw detector, etc., with the yearly production of 2,500 tons of centrifugal tube casting and 2,000 tons of precision casting.

工厂生产装备精良、检测设备齐全，拥有真空感应电炉、中频感应电炉、离心浇注机、自动焊机、直读光谱仪、内窥镜、涡流探伤仪等各种专用设备160余台套，具有年产离心铸管2500吨、精密铸件2000吨的生产能力。

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。

Numerical simulation for this event is performed using the non-hydrostatic, two-way interactive, triply nested grid mesoscale model MM5 and the structure of the inverted typhoon trough is studied. Furthermore, the formation and development mechanism of the inverted typhoon trough as well as the meso-scale vortex are discussed through the budget of vorticity equation.

采用双向三重嵌套网格非静力模式MM5对这一过程进行了数值模拟，研究了台风倒槽的中尺度结构特征，并通过涡度收支探讨了台风倒槽及中尺度低涡发生发展的物理过程。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。