elbow with socket end

例句：

1. 1. The carpenter carefully fitted the elbow with socket end into the wall.
   木匠小心翼翼地将带有插槽端的肘部安装在墙上。
2. 2. The engineer designed a new elbow with socket end for the bridge.
   工程师为桥梁设计了一个新的带有插槽端的肘部。
3. 3. The construction worker used the elbow with socket end to secure the concrete beam.
   建筑工人使用带有插槽端的肘部来固定混凝土梁。