Keep safe working load of derricks.

让吊杆在安全负荷下工作。

youdao

Lower down and secure all derricks and report.

放下，绑牢吊杆并报告。

youdao

Please swing the derricks outboard. We want to use the shore crane.

请把吊杆甩到外档去，我们要用岸吊作业。

youdao

Please swing the derricks outboard. We want to use the shore crane.

请把吊杆甩到外档去，我们要用岸吊作业。

youdao