Meteorological records in the past 50 years indicate that there has been a sharp decrease in sand dust storm frequency, which is in accordance with the decrease in annual mean wind speed.
近50年来多个站点的观测记录表明了沙尘暴的发生频率处于快速下降的过程，这恰好与年均风速的变化趋势较为一致。
The industry is expecting rising cost and frequency of claims for flooding, subsidence and storm damage.
保险行业期望提高因洪水、地面下沉以及暴风雨损毁的索赔费用和频率。
The simulations study how climate change might affect the frequency and intensity of 'cyclonic disturbances', which range from severe storms and gales to low-pressure areas that may not form a storm.
这一模型用于研究气候改变是怎样影响飓风骚扰的频度和强度的，研究范围包括严重的风暴和大风到不太会产生风暴的低气压地区。
The fifth is the observation in reality of a predicted link between increased sea-surface temperatures and the frequency of the most intense categories of hurricane, typhoon and tropical storm.
第五，观察资料显示：海洋表面温度的持续上升和最高级别飓风、台风以及热带风暴的发生频率之间存在着可预测关系。
During ionospheric storm periods, the existing prediction methods for the critical frequency of ionospheric F2 layer(foF2) can not satisfy the requirements of the practical applications.
在电离层风暴期，现存的电离层F2层临界频率预测方法不能满足实际应用的要求。
Such dust storm weather has the new characteristics below: higher frequency, stronger intensity, larger influence areas, earlier occurring time, and longer lasting time.
沙尘暴天气呈现频次高、发生时间提前、发生期时间长、强度大、影响范围广等新特征。
Sonographic patterns of joint effusion were: anechoic, cloudy, mixed and snow-storm on high-frequency ultrasound.
关节囊积液的声像图特征为无回声、云雾状、混合状和暴风雪状。
This paper also presents a Combined Distribution Model, which is suitable for storm surge frequency analysis.
本文提出了适用于我国沿海风暴潮影响地区的增减水重现值计算模型——组合分布模型。
This paper also presents a Combined Distribution Model, which is suitable for storm surge frequency analysis.
本文提出了适用于我国沿海风暴潮影响地区的增减水重现值计算模型——组合分布模型。
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