counting-rate meter

例句：

1. 1.The counting-rate meter is used to measure the number of items in a warehouse.
   计数速率计用于测量仓库中物品的数量。
2. 2.The engineer installed a new counting-rate meter to improve efficiency.
   工程师安装了一个新的计数速率计以提高效率。
3. 3. The counting-rate meter was used to monitor the production process.
   计数速率计被用来监控生产过程。