涡

The seal element of scroll tooth which is made of lubricative material and wearable board in the bottom of scrolls.

在涡旋齿端面开设密封槽内加由自润滑材料制成的密封条，同时在涡旋盘底平面加耐磨片，它们不但可以阻止泄漏，而且降低了涡旋齿与涡盘底部摩擦功率损失，在此提出了它们的设计方法。

ABSTRACT: Experiments were made about analysis of rotor oil film whirl and malalignment faults characteristics based on a flexible rotor test bench.

旋转机械和噪声测量-转子油膜涡动及不对中故障特征对比实验分析

The low-pressure trough of fronts at surface moved southward,and surface pressure fell rapidly,So it caused strong convergence and rising monton.

200hPa辐散，850hPa辐合的垂直配置，有利于低层水汽能源源不断上送；④特大暴雨发生在正涡度中心附近和上升运动中心的南侧。

Finite strain measures and kinematic vorticity analysis of deformed granite in mylonitic zone show that ductile shear zone is between plane strain and constraint strain and belongs to lengthening-thinning shear zone. Sub-striking stretch lineation in ductile shear zone and dip strea on brittle fault surface are not result of transferring of lineation but production of different deformations.

糜棱岩带变形花岗岩的有限应变测量和运动学涡度分析显示剪切带总体应变为介于平面应变与拉长应变之间的类型，属一般加长-减薄剪切带；断层系中近走向线理和倾向擦痕不是线理转化的结果，而是不同阶段变形的产物。

Using a forced dissipative nondivergent nonlinear barotropic vorticity equation and by means of various schemes, we did simulation experiment and get its numerical solution .

从强迫耗散无辐散正压涡度方程出发，用不同方案模拟试验得到它的数值解，它与已经导得解析解的特征较为一致。

One is Bardina vorticity modification, and the other is Richardson number modification. Prediction results show that Bardina method has a superior capacity to Richardson number modification. Since DSM model has improved predictive results of the reversed velocity and tangential velocity, it is a potential method to predict strong swirling nonisotropic turbulent flow in stead of the longer convergence time.

本文采用了基于旋转体系使湍流脉动加强和削弱两种作用的修正方法对k-ε双方程的湍流耗散率方程进行修正，计算结果表明，从旋转体系可使湍流能量加强出发的Bardina涡量修正方法，预报回流区范围缩小，更加接近于试验值，其计算结果优于使湍流脉动削弱的Richardson修正。

The properties of turbulence which characterized as the movement of vortexes influenced the heat and mass transfer, propagation of flame in the combustion process deeply, at the same time, the turbulent combustion based on the turbulent flow coupled with the intense chemical reactions, meanwhile, the heat releasing and the transfer of species concentration cause the nonnegligible effects on the turbulence and its structure.

以涡运动为特征的湍流的性质对燃烧过程中传热、传质和火焰传播都具有重要的影响；同时，湍流燃烧过程则是在湍流流动基础上再耦合以强烈的化学反应，其间由于燃烧造成的热释放、组份浓度的迁移等同样会对湍流流场产生不可忽视的作用。

It is concluded that during the landfall of Saomai, the orographic uplifting is able to enlarge the rainfall of the typhoon, and also to enhance the centre potential vorticity, vertical velocity as well as the convergence of moisture flux obviously.

结果表明，台风登陆过程中地形抬升作用对台风降雨量有显著的增幅作用；台风中心位势涡度、气流垂直上升速度、水平水汽通量散度明显增大；地形抬升机制在台风登陆时刻达到最强。

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。

Many researchers have determined and estimated tree transpiration by using the methods of rapid weighting, steady-state porometer, photosynthesis system, whole-tree photometer, ventilated chamber, weighting potted-plant, sap flow measurements, lysimeter, water balance, energy balance, Bowen ratio, eddy covariance, Penman-monteith Method, and remote sensing.

针对不同的植被覆盖类型，国内外许多研究通过各种手段和方法，如快速称量、稳态气孔计、光合作用测定、整树容器、风调室、盆栽称量、液流测定法、蒸渗仪、水量平衡、能量平衡、波文比、涡动相关、彭曼联合法和遥感等来估算林木蒸腾作用。

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