Enhancement brachium tricep and deltoid muscle: Lying face downward, right hand griping dumb bells and raising up.

增强肱三头肌和三角肌：俯卧，右手握住哑铃上举。

The brachia-bridge crane has obvious superiority with high efficiency, large working range and low cost which are the advantages of both bridge crane and brachia crane.

臂桥架起重机结合了桥式起重机和门座起重机的优点，装卸效率高、工作范围大，而且造价和基础土建费用低，其优越性非常显著。