the front of an advancing mass of colder air 同义词：cold front,
例句与用法
1.
Middle-latitude cyclones originate at the polar front . 中纬度地区的气旋发源于极锋。
2.
( 4 ) there exist close relation between the floods season precipitation in northeast china and the anomalies of subtropical summer monsoon , the anomalies of cold air , sub - tropical anticyclone , polar front jet , north hemisphere general circulation anomalies in winter ( 4 )东北汛期降水与西南夏季风、北方冷空气、副热带高压、极锋急流、前期冬季环流异常密切相关。
3.
Below 600hpa , the front of east asia was mei - yu front ; mei - yu equatorial front and polar front from the south to the north ; while above 600hpa , there was only mei - yu front . upon these conclusions , we put forward a conception model of east - asia front 在600hpa以下，东亚地区的经向方向锋区从南到北依次表现为梅雨锋，梅雨赤道缝和极锋；而在600hpa以上，只是极锋型的梅雨锋的单一结构。
4.
Chen et al noted that there are three kinds of landfall typhoon tracks ; subtropical high and polar front , whose evolutions and adjustments may modify typhoon movement , are the main synoptic systems which influence the track of landfall typhoon 陈联寿等根据( 1949 - 1976 )年资料，指出：登陆台风路径可分为三类；副热带高压和极锋是影响热带气旋陆地路径的主要天气系统，它们的演变和调整会影响热带气旋的移向。
您当前位置：