rotary jack hammer

例句：

1. 1.The construction crew used a rotary jack to lift the heavy equipment onto the roof.
   建筑工人使用旋转式千斤顶将重型设备提升到屋顶。
2. 2. During the demolition, the rotary jack was used to break up concrete blocks.
   在拆除过程中，旋转式千斤顶被用来破碎混凝土块。
3. 3. The engineer carefully selected the right rotary jack for the job site.
   工程师仔细选择了适合工作现场的旋转式千斤顶。