
CRANES - INSPECTIONS - PART 5: BRIDGE AND GANTRY CRANES, INCLUDING PORTAL AND SEMI-PORTAL CRANES AND THEIR SUPPORTING STRUCTURES
出版:International Organization for Standardization

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CRANES - INSPECTIONS - PART 5: BRIDGE AND GANTRY CRANES, INCLUDING PORTAL AND SEMI-PORTAL CRANES AND THEIR SUPPORTING STRUCTURES
出版:International Organization for Standardization
专家解读视频