line of equal pressure

例句：

1. 1. The engineer drew a line of equal pressure on the map to indicate the location of the mine.
   工程师在地图上画了一条等压力线，以指示矿井的位置。
2. 2. The doctor used a line of equal pressure to treat the patient's pain.
   医生使用一条等压力线来治疗病人的疼痛。
3. 3. The scientist measured the pressure at different points along the line of equal pressure to study the flow of water.
   科学家测量了沿着等压力线不同点的压力，以研究水流。