恒压的

例句：

1. 1. The pressure in the tank is constant at 20 bar.
   水箱内的压力恒定为20巴。
2. 2.The pressure gauge shows that the pressure is constant at 15 bar.
   压力表显示压力恒定为15巴。
3. 3.The constant pressure is causing the water to boil.
   持续的压力导致水沸腾。