查询词典 downburst

The impact of catastrophic winds such as typhoon, downburst, and tornado on transmission lines is introduced, including collapse of transmission towers.

重点介绍了台风、飑线风、龙卷风等强风暴下输电线路所受的影响以及输电塔倒塌等情况。

Downburst is an outburst strong wind on or near the ground, and its field characteristics are significantly different from boundary layer winds.

下击暴流是雷暴天气产生的近地面短时强风，具有和大气边界层近地风显著不同的风场特征，其风荷载数值模拟方法也和常规风荷载模拟方法不同。

The impact of catastrophic winds such as typhoon, downburst, and tornado on transmission lines is introduced, including collapse of transmission towers.

重点介绍了台风、线风、卷风等强风暴下输电线路所受的影响以及输电塔倒塌等情况。

The results achieved by the unsteady simulation on the basis of Reynolds averaged Navier-Stokes are fitted to the experiential wind profile well. The results indicate that the numerical simulation based on CFD provides a new solution to study the downburst wind characteristics under the current conditions without detailed full scale data.

数值结果表明，基于雷诺平均的Navier-Stokes方程进行的非定常数值模拟结果同根据实测数据提出的三种经验风剖面吻合良好，在目前实测资料稀少的情况下，有助于更好地研究下击暴流风的基本特征。

As the characters showing, the start of storm trailed off, the height of the top and the strong center of echo falling down indicates the downburst begin.

3多起下击暴流过程发生时回波顶、强回波中心高度下降，表明风暴减弱的开始是下击暴流开始形成的显著特征。

By adjusting the plate, the device is able to regulate the downburst parameters, such as the wind intensity, diameter, jet height, inclination angle.

通过调节平板，该装置能够同时改变冲击风强度、直径、射流高度、入射倾角等冲击风参数。

The wind convergence, mesoscale cyclone and vertical wind shear at lower levels may produce heavy rainfall. The mesoscale cyclone and vertical wind shear at middle and upper levels may produce strong downburst or hails.

低层水平风的辐合、中气旋、垂直风向切变等可以产生强降水，中高层的中气旋、垂直风切变可以产生下击暴流、冰雹等强对流天气。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。