indicating flow meter

例句：

1. 1.The indicating flow meter was used to measure the water flow rate accurately.
   指示流量计被用来准确地测量水流速率。
2. 2. The engineer installed a new indicating flow meter in the pipeline to improve efficiency.
   工程师在管道中安装了一个新的指示流量计，以提高效率。
3. 3. During the maintenance, the technician replaced the old indicating flow meter with a more accurate one.
   在维护期间，技术人员用一个更精确的旧指示流量计替换了它。