1)Hail index冰雹指数
1.Modifications were applied to the profiler parameters such as slant,altitude of 0℃ and-20 ℃,and the thresholds of POH,to study the change of 20 km/30km wind profile,hail index after the modifications.通过对风廓线斜距,0℃、-20℃层高度及冰雹百分比阈值的修改,观察20 km、30 km风廓线及订正前后冰雹指数的输出,得到了一些具有韶关本地特点的观测现象:斜距调节前后风廓线输出结果差异不大;冰雹指数产品在订正前后有比较明显的不同,对比分析表明用缺省参数比较符合冰雹发生时的实际情况,这种情况可能与广东地处低纬度地区有关。
2.By means of the CINRAD/CD and WSR-88D hail indexes,the hail data from January 2005 to August 2007 is analyzed.利用新一代多普勒天气雷达资料和WSR-88D提供的冰雹指数算法,对2005年1月至2007年8月发生在贵州省黔西南地区的20个冰雹个例进行验证。
2)hail days冰雹日数
1.Results show that the annual hail days in China decreased apparently in recent 30 years,and hails occur more frequently in the Tibetan Plateau with annual hail days more than 10 days.基于1971—2000年中国614个台站的冰雹观测资料,分析了冰雹日数的分布特征及其时间变化规律,发现我国冰雹频发区主要集中在青藏高原,大部分测站年雹日超过10 d;江南和华南地区雹日主要集中在2—4月,其他地区集中在5—9月。
3)hail storms index雹暴指数
1.The results indicate that the thermal infrared brightness temperature of hail cloud(CH31,CH32,CH35)are all less than 240K,the reflectance of mid-infrared wave band(CH20)is relatively low < 30%,the reflection index of visible light and short infrared wave band(CH1,CH6)>80%,hail storms index≥0.针对冰雹灾害多发的新疆天山西部地区,利用2007年和2008年5—10月14次MODIS卫星过境资料,选取共计45个云系样本数,进行冰雹云、强对流云团和薄卷云的光谱特征提取和雹暴指数计算与分析。
4)Hailstone[英]['he?lst??n][美]['hel'ston]冰雹
1.Aerocraft is easy to impact with hailstone and may cause serious damages during its flight,so it′s necessary to investigate hail impact on aerocraft by trial system.航空飞行器在飞行过程中容易和冰雹粒子发生碰撞,并由此造成撞击损伤。
2.The methods of speedup are proposed under the limitation of the strength of hailstone pill.运用简单波、冲击波理论,通过对气体炮打开后气体在发射管内的运动分析,给出作用在弹丸底部气体压力的最大值,根据冰雹弹丸的物理特性,提出进一步提高气体炮发射冰雹速度的方法。
3.The hailstone impacting test system is constructed basing on the theory of air gun which energy is offered by compressed air.冰雹撞击试验系统是以压缩空气为动力的空气炮原理构建的,在设计时系统参数选择决定了试验的成功与否,同样在试验阶段时也需要根据技术要求选择各参数。
英文短句/例句
1.small pellets of ice that fall during a hailstorm.下冰雹时坠落的小冰球。
2.Climatic character and dasaster of hail in Jiangxi Provice江西省冰雹气候特征及冰雹灾害研究
3.It was so cold yesterday that it hailed.昨天太冷,都下冰雹了。
4.It hailed the whole afternoon.整个下午冰雹下个不停。
5.rain, snow and sleet were falling.正在下着雨、雪和冰雹。
6.The hailstones were as big as tennis balls.冰雹和网球一样大。
7.Sleet came on after one o'clock.在一点钟后冰雹到来了
8.The ice storm got the rose bushes.冰雹破坏了玫瑰花丛
9.Haill lashed down mercilessly.冰雹无情地打下来。
10.Hailstones pelted the tent.冰雹不断地砸在帐篷上
11.The ice storm got my hibiscus; the cat got the goldfish.冰雹摧毁了我的芙蓉花。
12.Hail is a meteoric phenomenon.下冰雹是一种大气现象。
13.the falling to earth of rain or snow or hail or sleet or mist.降到地表的雨、雪、冰雹、冰雨、或雾。
14.To precipitate in pellets of ice and hard snow.下冰雹落冰和硬雪的颗粒
15.Precipitation in the form of pellets of ice and hard snow.冰雹以冰和硬雪块颗粒的形式下落
16.Hail Weather Process and Research on Artificial Hail Suppression南阳市冰雹天气过程和人工防雹作业研究
17.Hail particles characteristic analysis based on aviation aircraft hail impact test基于航空飞行器冰雹撞击试验的冰雹粒子特性分析
18.Such a hailstorm was a rarity in that region.这样的冰雹在那个地区可是希罕。
相关短句/例句
hail days冰雹日数
1.Results show that the annual hail days in China decreased apparently in recent 30 years,and hails occur more frequently in the Tibetan Plateau with annual hail days more than 10 days.基于1971—2000年中国614个台站的冰雹观测资料,分析了冰雹日数的分布特征及其时间变化规律,发现我国冰雹频发区主要集中在青藏高原,大部分测站年雹日超过10 d;江南和华南地区雹日主要集中在2—4月,其他地区集中在5—9月。
3)hail storms index雹暴指数
1.The results indicate that the thermal infrared brightness temperature of hail cloud(CH31,CH32,CH35)are all less than 240K,the reflectance of mid-infrared wave band(CH20)is relatively low < 30%,the reflection index of visible light and short infrared wave band(CH1,CH6)>80%,hail storms index≥0.针对冰雹灾害多发的新疆天山西部地区,利用2007年和2008年5—10月14次MODIS卫星过境资料,选取共计45个云系样本数,进行冰雹云、强对流云团和薄卷云的光谱特征提取和雹暴指数计算与分析。
4)Hailstone[英]['he?lst??n][美]['hel'ston]冰雹
1.Aerocraft is easy to impact with hailstone and may cause serious damages during its flight,so it′s necessary to investigate hail impact on aerocraft by trial system.航空飞行器在飞行过程中容易和冰雹粒子发生碰撞,并由此造成撞击损伤。
2.The methods of speedup are proposed under the limitation of the strength of hailstone pill.运用简单波、冲击波理论,通过对气体炮打开后气体在发射管内的运动分析,给出作用在弹丸底部气体压力的最大值,根据冰雹弹丸的物理特性,提出进一步提高气体炮发射冰雹速度的方法。
3.The hailstone impacting test system is constructed basing on the theory of air gun which energy is offered by compressed air.冰雹撞击试验系统是以压缩空气为动力的空气炮原理构建的,在设计时系统参数选择决定了试验的成功与否,同样在试验阶段时也需要根据技术要求选择各参数。
5)hail[英][he?l][美][hel]冰雹
1.Statistical Analysis on Hail Disaster of Zhaoyuan City;山东省招远市冰雹灾害统计分析
2.Climate Characters and Prediction on Hail Weather in Haiyan;海晏地区冰雹天气气候特征及预测
3.The effects of freeze and hail condition on biochemistry and physiology of tea tree;冻害、冰雹对茶树生理生化的影响
6)Hailstorm[英]['he?lst?:m][美]['hel'st?rm]冰雹
1.Mechanism Analysis of a Severe Hailstorm Process in Guangxi;广西地区一次强冰雹过程形成机制分析
2.Echo characteristics,circulation background and environment variables during a hailstorm in Akesu were analyzed by using basic CINRAD/CC data and its production.利用南疆阿克苏新一代天气雷达CINRAD/CC的基本产品和导出产品,分析了阿克苏一次冰雹过程的环流背景、环境因子以及冰雹云多普勒天气雷达的回波特征,发现中等强度的垂直风切变和弱回波区是此次冰雹天气的重要特征,并得出垂直累积液态水含量、回波顶高和FY-2C定量产品的简明预报判据,为南疆地区冰雹的临近预报提供了依据。
3.The hailstorm occurred on July 6 to 8,2003 over the northeast of Qinghai-Xizang plateau was simulated by using MM5,and its meso-scale circulation background and local convective cells characteristics were analyzed based on simulated data.运用中尺度数值模式MM5,对2003年7月6~8日甘肃南部发生的一次典型区域性冰雹过程进行了数值模拟,并用模拟资料分析了大中尺度环流背景和局地对流单体群特征的演变。
延伸阅读
迁移效率指数、偏好指数和差别指数迁移效率指数、偏好指数和差别指数 迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中,}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100,如某一地区的值越大,反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂,则: }艺材。一芝Mj、}EIM汀艺。+乏M,(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二,么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中,M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I,j为迁移偏好指数。通过计算迁移偏好指数,可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如,专业技术人员的人数所占比重,各种文化程度人数所占比重等,以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中,M为迁移人数;M,为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。