Double-trolley Bridge Crane
arch rigid-frame bridge
bridge crane
桥式起重机
桥式提升机
桥机
桥梁起重机
桥式吊机
门式起重机
桥式吊车
桥式天车
行车
桥式堆高机
桥式吊运车
架空起重机
bridge crane air conditioner
Bridge Crane Air Conditioning
bridge crane air conditioning system
bridge crane for container
consecutive rigid frame bridge
constinuous rigid-frame bridge