bracketarm

例句：

1. 1. Theengineer carefully measured the length of the bracket arm before installing it.
   工程师在安装之前仔细测量了支架臂的长度。
2. 2. Thebracket arm was designed to supportthe heavy equipment on the construction site.
   支架臂的设计是为了支撑工地上的重型设备。
3. 3. Thebracket arm was a crucial componentin the assembly process.
   支架臂是组装过程中的一个关键部件。