锋面过境

冷锋型过程中，锋面过境常常伴随相对湿度的急剧减小；蒙古气旋型过程中，气旋南侧整层大气较为干燥，易出现强沙尘暴。

The frontal passage in cold-front process usually led to a dramatic decrease of relative humidity . The air is relatively dry in the south side of the cyclone in Mongolia cyclone process which usually results in server sandstorm .

在这次事件中，受阻的高压系统非常强劲，阻塞了所有能够缓解的锋面过境。

The high-pressure system that became stuck in this instance was very powerful and blocked any relieving fronts from passing .

锋面过境前后出现蚊虫日数、三带喙库蚊有极显著差异（P<0.01），中华按蚊无显著差异（P>0.05）。

The statistical analysis of mosquito number before and after the passing of the front showed that a very significant difference for Culex tritaeniorhynchus ( P < 0.01 ), but no significant difference for Anopheles sinensis ( P > 0.05 ) .