recording flow-meter

• 记录式流量计

recording flow-meter的用法和样例：

例句

1. The ball flow meters can be built with common shop tools.
   动球式流量计可以用普通的工厂设备制出。
2. A constant-current hotwire flowmeter for measuring tiny gas flow was researched.
   研制了测量微小气体流量的恒流型热线式流量计，对电路进行了设计与研制。