... 附着式塔式起重机 attached tower crane 内爬式塔式起重机 climbing tower crane 上回转塔式起重机 high level slewing tower crane ...
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超高空吊装超重钢构件，需要大型的内爬式塔式起重机。
When the overweight steel members are hoisted at high altitude, large internal-climbing tower crane must be adopted.
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