短語詞組短語travelling portal jib crane 移動(dòng)式懸臂吊車;門式移動(dòng)懸臂起重機(jī)Portal slewing crane 門座起重機(jī)Portal cable crane 門式纜索起重機(jī)Railway portal bridge crane 鐵路門式起重機(jī)double portal jib crane 雙龍門吊portal floating crane 門式浮吊portal l crane 門式起重機(jī)portal jib crane 門式起重機(jī);龍門吊車;門吊;門座旋臂起重機(jī)portal bridge crane 門式起重機(jī) 返回 portal crane