To create the illusion of low gravity, director Irving Pitchel attached the actors to piano wire run through a pulley system and controlled by an overhead crane.
为了营造低重力的错觉，导演欧文·皮切尔将演员连接到通过滑轮系统运行的钢琴线上，并由桥式吊车控制。
Overhead crane
原声例句
透视百科综合类
美国小学英语6
He could remember how the overhead crane man had shouted He-e-eads up! as he had sailed down the length of the building with the first load of the parts dangling from his hook.
他还记得当时头顶上的起重机指挥者叫嚷着小心，起重机钩子上悬挂着第一批零件，将零件放在建筑上。
中文百科
桥式起重机
桥式起重机（英语：bridge crane或overhead travelling crane），俗称天车，工业环境中的一种常见起重机，其取物装置悬挂在能沿桥架运行的起重小车、葫芦或臂架起重机上，且桥架梁通过运行装置直接支承在轨道上。
英语百科
Overhead crane 桥式起重机
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An overhead crane, commonly called a bridge crane, is a type of crane found in industrial environments. An overhead crane consists of parallel runways with a traveling bridge spanning the gap. A hoist, the lifting component of a crane, travels along the bridge. If the bridge is rigidly supported on two or more legs running on a fixed rail at ground level, the crane is called a gantry crane (USA, ASME B30 series) or a goliath crane (UK, BS 466).
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