catenary sag

例句：

1. 1. The catenary sag is a crucial component of the cable system.
   拉索是电缆系统的关键组成部分。
2. 2. The engineer carefully measured the catenary sag to ensure stability.
   工程师仔细测量了拉索，以确保稳定性。
3. 3. The construction team was working on the catenary sag when it suddenly collapsed.
   施工队在处理拉索时，突然发生了塌陷。