乔治大师演示如何操纵复杂对象如活塞发动机，凸轮、摇臂、齿轮、滑轮，并把他们都变成一个机械化的输送带。
George Maestri shows how to rig complex objects such as piston engines, cams, rocker arms, gears, and pulleys, and combine them all into a mechanized conveyor belt.
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；
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.
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