复用开关的一个简单例子就是将单台设备的输出连接到2台仪器，例如一台伏特表和一台频率计数器。
One example of a multiple closure would be to route a single device output to two instruments, such as a voltmeter and a frequency counter.
我用计数仪表和限位开关、钢管等简单的物品制作了一个计数器，这个计数器可以数传送带上装满物品的袋子的个数。
Used a counting instrument and limit witches, steel tubes make a counter that can be statistics the number of bags filled something on the conveyor belt.
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