dead water region

基本解释

A flat surface will block the wind flow and also create a dead water region to trap the bug before it is squashed.
平的表面可以阻止风的流动，并且在蚊子被压碎的时候也形成“漩涡”区域。
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Because it is located in a very hot and dry region, the Dead Sea loses much water through evaporation, causing its level to fluctuate during the year.
因为它处于一个非常炎热和干燥的地区，死海由于蒸发损失掉大量的水，导致其水平面一年到头不断波动。
When the separation distance is small, the region between two stages is filled with "dead water" flow, the bottom drag of forebody is negative, the typical "afterbody effect" phenomenon occurs.
级间距离较小时，级间区为死水区，前体阻力为负，出现典型的“后体效应”现象；