bracket block

例句：

1. 1. The engineer useda bracket block to hold theheavy machine together.
   工程师用一个夹板来固定这台重型机器。
2. 2. The carpenter used a bracket blockto attach the wooden beams together.
   木匠用一个夹板将木梁连接在一起。
3. 3. The construction worker used a bracket block to secure the roof of thebuilding.
   建筑工人用一个夹板来固定建筑物的屋顶。