the injection threshold pressure

• 启动压力

the injection threshold pressure的用法和样例：

例句

1. The smaller the permeability, the bigger the start-up pressure gradient.
   渗透率越小，启动压力梯度越大。
2. This valve starts with low pressure and closes with high sensitivity and good sealing.
   该阀启动压力低，关闭灵敏度高，密封性能好，进出口方向任意。