But Hutchings argues that the sketch actually shows blocks on the ground being pulled by a weight attached to a pulley—the same type of experiment you might do today in a high school physics class.

但是哈钦斯却认为，在这张草图中，放置在地上的数个方块由配有滑轮装置砝码拖动——这和高中物理课上做的实验类型简直如出一辙。

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The rocker arm is connected with the balance weight block through a rotary shaft, a cam, a pulley, a steel cable and a lifting rod, and an initial position can be selected through a barrier shaft.

摇臂通过转轴、凸轮、滑轮、钢丝绳、提升杆与配重块相连，初始位置可由挡轴选定；

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The weight rising on one side of the pulley is offset by the weight falling on the other side.

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It is like a pulley with a brake on it to keep the weight moving slowly down generating energy on its descent.

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One upper body machine, called the "High Pulley, " requires users to reach over their heads to pull down a weight.

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