discharging relieving arch

例句：

1. 1. The engineer designed the discharging arch to direct the water flow more efficiently.
   工程师设计了排放减压拱门，以更有效地引导水流。
2. 2. The construction of the relief arch was a significant achievement in engineering history.
   建造减压拱门是工程史上的一个重大成就。
3. 3. The arch is crucial for maintaining the structural integrity of the bridge, as it helps distributethe weight evenly.
   拱门对于保持桥梁的结构完整性至关重要，因为它有助于均匀分配重量。