用移動式起重機在施工現場固定前<unk>混凝土梁

相關標籤:

• construction worker
• construction safety
• construction man
• cement
• building construction
• construction crane
• construction
• crane
• building structure
• worker
• safety
• concrete
• profession
• bar
• building
• man
• structure
• danger
• lifting
• 4k
• 14+