陆风

The transverse wave disturbance along tangential base flow of circular vortex is discussed By using numerical method we study this instability of baroclinic flow which is mesoscale inertia wave instability on the cylindrical coordinate The influence of stratification stability N 2 , Coriolis parameter f 0 , the vertical shear of tangential wind z of the ambinent atmosphere and the latent heat on the growth rate of instability is studied From the above analysis and calculation, we can learn that there are Eady mode and mesoscale mode of transverse wave instability in circular vortex as well Furthermore we also learn that distribution character of mesoscale mode disturbance field of transverse wave instability, anomalistic "cats eye" structure of lower level and the character of the slowly spreading disturbance converges at low level and the quickly spreading disturbance converges at high level

作者中文名：李红金；陆汉城；宋晓亮；李鲲摘要：讨论涡旋大气中，存在沿切向基流传播的横波型扰动，并采用数值方法讨论了柱坐标系下圆形涡旋系统斜压气流中这类扰动的不稳定，这是一类中尺度的重力惯性波的不稳定。研究了涡旋环境大气的层结稳定度参数N2、切向风垂直切变Vz、凝结潜热、涡旋特性及科里奥利参数f0对不稳定增长率的影响。圆形涡旋中同样存在横波不稳定的Eady模态和中尺度模态，得到了中尺度模态的扰动场分布特征：流场的不规则"猫眼"结构及慢速传播的扰动均集中在低层，而快速传播的扰动均集中在高层的扰动特征。

The style of Lu You s Ci had been change d in his middle ages;a gradual break from luxuriousness to plainness,a tendency which shows the "poeticized" characteristic that is,not only of Lu You s Ci,but also of the dominant tendency in the field of Ci in South Song.

陆游词风在他的中年时期发生了重要变化，他的词逐渐摆脱纤艳华丽而趋向清新平淡，其词开始具有了明显"诗化"倾向，这也显示出南宋词坛词风变化的趋势。

A new index is developed for land-sea thermal difference zonally/meridionally in terms of east Asian zonal sea-level pressure difference combined with high and low-level zonal wind shear at low latitudes.

将东亚纬向海平面气压差与低纬度高低层纬向风切变结合，定义了一个能表征东西和南北向海陆热力差异的东亚季风指数。

A 2-D fog numerical model is used to simulate the formation and evolutionof advection-radiation fog of June 9, 1980 in the opening area of the Yangtze River to sea.The effects of advective wind, sea-land circulation on the fog are discussed.

本文用二维非定常数值模式模拟了1980年6月9日长江口地区海雾向上海地区平流而形成的平流雾个例，其中讨论了盛行风、海陆环流对海雾的影响，结果与实况近于一致。

The style of Lu You s Ci had been change d in his middle ages;a gradual break from luxuriousness to plainness,a tendency which shows the "poeticized" characteristic that is,not only of Lu You s Ci,but also of the dominant tendency in the field of Ci in South Song.

陆游词风在他的中年时期发生了重要变化，他的词逐渐摆脱纤艳华丽而趋向清新平淡，其词开始具有了明显&诗化&倾向，这也显示出南宋词坛词风变化的趋势。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。