differential draught gage

例句：

1. 1.The differential draught gage was used to measure the air flow rate in the pipeline.
   差压式流量计被用来测量管道中的气流速率。
2. 2.The engineers used the differential draught gage to monitor the pressure drop across the valve.
   工程师们使用差压式流量计来监测阀门处的压力损失。
3. 3.The differential draught gage is essential for accurate measurement of fluid flow rates in industrial applications.
   差压式流量计对于工业应用中流体流速的准确测量至关重要。