alternating load

例句：

1. 1. The truck has an alternating load system that distributes the weight evenly across its wheels.
   这辆卡车有一个交替负载系统，可以均匀地将重量分布在其车轮上。
2. 2.The engineer used a computer program to calculate the alternating load on the bridge.
   工程师使用计算机程序来计算桥梁上的交替负载。
3. 3.The construction crew was working around the clock to ensure the alternating load on the road was not causing any problems.
   施工队伍不分昼夜地工作，以确保道路上的交替负载没有造成任何问题。