overhead and gantry crane meaning in Chinese

桥式和高架龙门起重机

Interpretations : rules for construction of overhead and gantry cranes
说明:高架结构和龙门吊的规则
Overhead and gantry cranes top running bridge , single girder , underhung hoist
桥式起重机和龙门起重机
Rules for construction of overhead and gantry cranes top running bridge , multiple girder
桥式起重机和龙门起重机的建造规则
, interpreations : overhead and gantry cranes top running bridge , single grinder , underhung hoist
说明:高架起重机和龙门起重机
Interpretations : overhead and gantry cranes top running bridge , single or multiple girder , top running trolley hoist
说明书:高架和龙门起重机说明