transonic dip

例句：

1. 1. The aircraft made a transonic dip at the altitude of 30,000 feet.
   飞机在海拔30,000英尺的高度进行了跨音速俯冲。
2. 2.The pilot noticed a transonic dip in the air traffic control radar.
   飞行员注意到空中交通控制雷达中出现了跨音速俯冲。
3. 3.The researcher discovered that the transonic dip could cause significant changes in the flow field.
   研究人员发现跨音速俯冲可以导致流场发生显著变化。