low-tension arc

例句：

1. 1. The engineer designed a low-tension arc to improve the stability of the bridge.
   工程师设计了一个低张力弧来提高桥梁的稳定性。
2. 2. The low-tension arc is used in power transmission lines to prevent overheating.
   低张力弧用于电力传输线路，以防止过热。
3. 3. The low-tension arc was found to be more efficient than traditional methods for handling heavy loads.
   研究发现，低张力弧比传统的处理方法在处理重载时更为高效。