quarter beam

例句：

1. 1. The engineer measured the length of the quarter beam and calculated the necessary reinforcement.
   工程师测量了四分之一梁的长度，并计算了必要的加固。
2. 2.The construction crew used the quarter beam to support the weight of the building during the demolition.
   施工队使用四分之一梁来支撑建筑物在拆除过程中的重量。
3. 3. The beam was cut into smaller pieces for easier transportation and installation.
   该梁被切成较小的片以便更易运输和安装。