weak echo region
有界弱回波区 BWER ; bounded weak echo region
·2,447,543篇论文数据，部分数据来源于NoteExpress
人字形回波的左半支的雷达回波及对应的地面风速比右半分支弱，且无强对流区后部的层状云和地面雷暴高压、冷池等；
By contrast, there are no significant features of right branch such as stratiform cloud, thunderstorm high and cold pool in the left branch of the squall line.
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