boom cables 中文意思是什麼
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A machine for hoisting and moving heavy objects, consisting of a movable boom equipped with cables and pulleys and connected to the base of an upright stationary beam
懸臂起重機提升和移動重物的機器，它由一個帶有纜繩和滑輪的可移動的、並與一根由向上靜止橫梁的底座連接的起重桿組成
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