lower chord bracing

例句：

1. 1. The engineer used a lower chord bracing to strengthen the beam's stability during construction.
   工程师使用下弦支撑加固了施工期间的梁的稳定性。
2. 2. During the earthquake, the building's lower chord bracing held up well, preventing further damage.
   地震发生时，建筑物的下弦支撑表现良好，防止了进一步的损害。
3. 3. The structural engineer recommended the installation of lower chord bracing to improve the building's seismic resistance.
   结构工程师建议安装下弦支撑以提高建筑物的抗震性能。