... laying tractor 履带式吊管机 laying winch 铺管绞车 laying work 铺管作业 ...
基于168个网页-相关网页
... pipe-laying tractor 铺管拖拉机 pipe-laying winch 铺管绞车 pipe-mover 管道移动器 ...
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... marine pipe-laying 海上铺管 pipe-laying progress chart 铺管进度图表 laying winch pipe-laying winch 铺管绞车 ...
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