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The workers are winching out these big tree roots.
工人们正在把这些巨大的树根从地里拔出来.
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According to engineering characters and concrete situation the winching and rocker integral hoisting method is adopted.
针对该网架的工程特点及现场的具体情况,决定采用绞磨拔杆整体吊装方法.
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