mesh Reynolds number

例句：

1. 1. The net is designed to catch fish.
   这个网是用来捕鱼的。
2. 2. The mesh of the tent is too small for a child's size.
   帐篷的网眼太小了，不适合小孩。
3. 3. The mesh of the fabric is so fine that it can filter out dust.
   这种布料的网眼非常细，可以过滤掉灰尘。