风强的

Furthermore data assimilation experiments are conducted with MM5 Adjoint-model Assimilation System made by adjoint codes. With a case of heavy rainfall taking place from 00h July 23 to 00h July 24,2002, several numerical simulation experiments of different schemes are performed. The results are as follows. MM5 Adjoint-model Assimilation System not only can improve the initial field effectively and promote the coordination with the model but also can enhance the forecast on the precipitation and other elements. The assimilation of CDW has an improvement on quality of upper wind. The effect of direct numerical simulation with utilizing the CDW to amend the initial field gains the advantage over the one not.

结果表明，MM5伴随模式同化系统能有效改善初始场与模式的协调能力，提高模式对于降水场和其它要素场的预报；使用云导风资料修正初始场后直接模拟的效果比未使用时直接模拟的效果要好，对部分区域的强降水预报精度有一定程度的改善；使用伴随模式同化系统后，加入云导风资料的同化试验对其它要素的改善与直接同化常规资料的效果相比，改善优势不明显，但从各要素的误差来看，对于风场的改善最好。

The evolution of reflectivity in the Doppler images was coincided with the mode of the classic heavy precipitation supercell storm.And there was an obvious structure of heavy precipitation supercell storm in the vertical sectional drawing.Furthermore,there were also a mid-cyclone and a vertical wind shear in the process.At last,the factors related to the hailstone were analyzed.

新一代天气雷达图像上强度图的演变与强降水超级单体模式相吻合；剖面图上显示出强降水超级单体的明显结构；存在着中气旋和中等到强的垂直风切变；分析了此次过程中出现冰雹的相关因子。

Wind filler is made from silencing material with noise 5 db lower than national industrial standard, whilst suction wind strength 120-150 Pa higher than national industrial standard and up to 350 Pa, leaving strong suction and desirable ironing effect and resolving insufficient suction of old ironing table.

吸风压强比国家行业标准高120-150Pa，最高达350Pa。使吸风强劲，使熨烫效果更好。解决过去老式烫台吸风不足的弊病。风门全程采用机械模具冲制，使风门光洁顺畅及密封性好。

Ge Yusheng, General Secretary with Chinese As sociation of Light Industry Machinery seriously mentioned that Baodao-B-3 low-noise, strong-suction V suction-ironing table is unique in its kind, which successfully overcame the ins ufficient suction of old ironing table with its suction wind strength up to 350 Pa, whose whole stroke of suction valve adopts stamping by machinery mould, leaving smooth suction door of good sealing and low-noise etc. My personal involvement in this quality inspection witnessed the proven quality of Baodao brand.

中国轻工机械协会秘书长，高级工程师葛余生认真地讲宝岛牌YTT-B-3型低噪音强吸风，V型吸风烫台与同行业生产的不一样，很具有特色，解决了过去老式烫台吸风不足的弊病，吸风压强最高达350Pa，吸风阀门全程采用机械模具冲制，使风门光洁畅顺及密封性好，噪音低等特点(我亲自参加了这次质量检测，宝岛品牌名副其实)，宝岛品质国内一流，与国际同步，替代进口，价格从优。

This paper presents the geostrophic and gradient wind appropriate calculation formulas used on facsimile surface weather chart, puts forward a new method of sea surface wind estimating from the theoretical wind speed by establishment of the wind speed correction database. Also the application characteristics and advantages of the gradient wind calculation method on severe weather system are discussed.

为了深入探讨海面风估算方法，给出了传真地面天气图上地转风、梯度风的近似计算公式，介绍了用传真图实时计算地转风与梯度风的实现方法，提出了通过建立风速订正值库由风速理论值实时估测平均海面风速的一种新方法，并深入探讨了梯度风测风方法在强天气测风中的应用特点和优势。

In the article, we analysised the rainstorm process using conventional information, encryption data, strength ,speed and wind profile data of Doppler radar, discussed the atmospheric circulation system in the westing process of the subtropical high; revealed the different reasons caused two heavy precipitation (more than 10 mm per hour) and the possibility of small and medium-scale system existed, displayed the vertical distribution of the wind field over the stations in the rainstorm process and the close relationship between the transmission., strengthen of the level air-jet and the heavy precipitation, and then proved that the heavy precipitation was caused by the transmission and strengthen of the low-level jet.

利用常规资料，加密观测资料，多普勒雷达强度、速度和风廓线资料等对本过程进行周密细致的分析。探讨了在副热带高压西进过程中与之相配合的大气环流形势和影响系统；揭示了造成两次强降水（1小时大于10 mm以上）的不同原因和中小尺度系统存在的可能性；展示了暴雨过程中测站上空垂直风场的分布特点以及风廓线高低空急流下传和加强与强降水的密切关系，证明了强降水的产生主要由低空急流的下传和加强引起的。

The study results indicate that as emission power increases, the peak power density on the section of a certain distance will increase firstly, then it will descend and that the peak light intensity on the section will increase with the increasing of spot radius of basic mode Gaussian beam. As the propagation distance increases, the peak light intensity on the section will descend gradually, and the laser energy will spread. The light intensity distribution exhibits straw hat shape on a certain conditions, in other word to say, the central light intensity is less than acroteric light intensity.

结果表明，无风稳态热晕效应存在时，随发射功率的增大，一定传输距离截面上的峰值功率密度先增人后减小；截面上的峰值光强随基模高斯光束的腰斑半径的增大而增大；随着传输距离的增大，截面上峰值光强在逐渐减小，能量在逐渐向周围扩展；在一定条件下，截面上的光强分布会呈现中心光强小于周围光强的&草帽型&分布。

Therelationship between the turbulent kinetic energy and its dissipation rate,whichis widely used to parameterize the dissipation rate in turbulence closure models,is found to hold well for both reversing and rotating flows,but with differentcoefficients.Microstructure profiling measurements at two comparative stations (a deepercentral basin and a local shelf break) in the stratified Yellow Sea are analyzed,with emphasis on tidal and internal-wave induced turbulence near the bottomand in the pyenocline.The water column has a distinct three-layer thermohaline structure,consisting of weakly stratified surface and bottom boundary layers anda narrow sharp pycnocline.Turbulence in the surface layer is controlled by thediurnal cycle of buoyancy flux and wind forcing at the sea surface.while thebottom stress induced by barotropic tidal eurrents dominates turbulence in thebottom boundary layer.The maximum level at which the tidally enhanced mixingcan affect generally depends on the magnitude of the tidal current,and it canbe up to 10-15 m in the Yellow Sea.This suggests that,in the deeper regionsof the shelf seas,turbulent dissipation and mixing are very weak at the levelsbetween the near-bottom tidally enhanced layer and the pycnocline.Therefore,these levels provide a significant bottle neck for the vertical exchanges.In theshallow regions,however,the tidally-induced turbulence can occupy the wholewater colum below the pycnocline.A quarter-diurnal periodicities of the turbulentdissipation rate and eddy diffusivity are found at different heights with evidenttime lag.In the relatively flat central basin,the pycnocline is essentially non-turbulent and internal-wave activity is very weak.Therefore,vertical fluxes acrossthe pycnocline decreased to molecular levels.In contrast,internal waves of variousperiods can be always found near the local shelf break.

对强层化季节黄海两对比性站位(分别位于中央海盆区与局地陆坡区)处层化、内波以及湍流混合特征的研究结果表明：1、强层化季节的陆架海水体一般呈现显著的三层热盐结构，在水体近乎混合均匀的上混合层与潮流底边界层之间为强跃层；2、近表层水体的湍流混合强度主要由海表浮力通量的日变化与海表风强迫控制，而在潮流底边界层内，潮混合是水体热量、物质、动量与能量垂直交换的主要机制；3、潮混合影响的深度由潮流大小决定，在黄海，一般可达10-15 m，因此，在水深较深的区域，在跃层与潮混合所至深度范围的上界之间存在湍流混合非常弱的区域，这显著抑制水体内物质的垂直通量，为物质垂直交换的瓶颈，而在水深较浅的区域，潮混合影响范围可至跃层底部，因此物质在跃层以下整个水体中混合非常均匀，当跃层内间歇性强混合发生时，可以产生显著的跨跃层物质输运；4、近底潮致强湍流耗散缓慢地向上传播，底上不同深度处垂直湍扩散系数也具有显著的位相差异，且二者均随时间呈现四分之一周日周期的变化；5、在地形较为平坦的中央海盆区，内波活动非常微弱，因此跃层内湍流混合非常弱，垂直扩散系数为分子扩散水平，跨跃层物质通量受到显著抑制，而在地形变化较为显著的局地陆坡区，内波活动非常活跃，除内潮的影响外，高频内波与内孤立波的影响也很显著，因此跃层内存在很强的间歇性强混合，内孤立波存在的区域，水体湍流混合显著增强。

The results show that side force, lift and overturning moment obtained by simulation and by wind tunnel test are consistent. When train travels with certain speed, the aerodynamic force and overturning moment acting on passenger car running on bridge, embankment and flat will increase greatly as cross-wind becomes larger while those increase less when the train runs on cut. Under the condition of strong cross-wind, aerodynamic force and overturning moment acting on train traveling on bridge are the largest. So the train traveling on bridge tends to overturn compared with that traveling on other three kinds of railway conditions. Aerodynamic force and moment acting on train traveling on cut are the least.

研究结果表明：侧向力、升力和倾覆力矩数值模拟结果与风洞实验结果均吻合较好；车速一定时，随着侧风速度的增大，列车在桥梁、路堤、平地上运行所受气动力和倾覆力矩均急剧增加，而在路堑上运行所受气动力及力矩增加缓慢；当侧风速度一定的情况下，客车在高桥上运行所受到的气动力及力矩最大，因此，强侧风下列车在高桥上运行较容易发生倾覆事故；在路堑上所受到的气动力相对最小。

Law, air-flow valve, smoke fire damper and toilet Zhini valve, fume hood, fume hood exhaust outlets and throat hoop, Strong water heater exhaust pipe, vacuum tubes, foam, Extrusion boards, cotton centrifuge tubes, plates, PEF board, geotextile fabric, such as perlite and HVAC insulation materials, while the United States and the ventilation fans and air ventilation fans of the Green Island Acting .

上海文运建筑材料有限公司成立与2005年，是国内合资企业，坐落于嘉定国际机电五金城内，生产经营各种中央空调铝合金进，出风口，散流器，防雨百叶，双层百叶，单层百叶，格栅回风口，风机百叶风口，可开式风口，圆形风管法拦，风量调节阀，防烟防火阀，卫生间止逆阀，油烟罩，油烟罩排气口，喉箍，热水器强排风管，吸尘管，泡沫板，挤塑板，离心棉管，板，PEF板，土工布，珍珠岩等暖通及保温材料等，同时美的换气扇以及绿岛风换气扇的代理。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。