valve passage resistance

例句：

1. 1. The valve passageresistance in the pipeline is a critical factor in determining the flow rate.
   管道中的阀门通道阻力是决定流速的关键因素。
2. 2.The valve passage resistance can be reduced by using a smaller orifice size.
   通过使用较小的孔径，可以降低阀门通道阻力。
3. 3.The valve passage resistance is measured using a pressure drop test.
   阀门通道阻力是通过压力降测试来测量的。