A large green harbor crane stands on concrete dock used for loading bulk materials at an industrial seaside port under overcast 图库摄影 a large green harbor crane stands on concrete dock used for loading bulk materials at an industrial seaside port under overcast
Harbor crane with a blue pillar white boom and stands against clear sky showing weight limit capacity of tons 库存照片 harbor crane with a blue pillar white boom and stands against clear sky showing weight limit capacity of tons
Industrial harbor crane close up side view of a white boom with blue pillar showing maximum weight capacity label tons against 库存图片 industrial harbor crane close up side view of a white boom with blue pillar showing maximum weight capacity label tons against
港口起重机在蓝天背景下。门式起重机是一种全回转起重机，其回转部分安装在沿地面或高架轨道行走的门架上 免版税库存照片 港口起重机在蓝天背景下。门式起重机是一种全回转起重机，其回转部分安装在沿地面或高架轨道行走的门架上
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