mat support jack-up rig

例句：

1. 1.The mat support jack-uprig was used to lift heavy equipment ontothe ship.
   马鞍支撑式起重机被用来将重型设备吊装到船上。
2. 2. Theengineer had to adjust the mat supportjack-up rig to fit thenew cargo container.
   工程师不得不调整马鞍支撑式起重机以适应新的集装箱。
3. 3. Themat support jack-up rigwas a critical component of the construction project.
   马鞍支撑式起重机是该建设项目的关键组成部分。