inflow Mach number

例句：

1. 1. The river has a significant inflow of fresh water from the mountain range.
   这条河流从山脉有大量的淡水流入。
2. 2. The inflow of tourists has significantly increased the city's economy.
   游客的流入显著增加了城市的经济。
3. 3. The inflow of new data is causing the server to slow down.
   新数据的流入导致服务器运行缓慢。