Add slightly more or less noise and the characteristics of the switch change, turning it into a different kind of logic gate.
稍微多加或减少一点噪音开关的特性就改变了，这会使其变成完全不同的一类逻辑门。
Field programmable gate array chips typically support two or more power supply voltages, allowing the user to switch between the supported power supply voltages.
现场可编程门阵列芯片通常支持两个或更多个电源电压，以允许用户在所支持的电源电压之间切换。
When only one opening is opened at any given time, it is necessary to restrict the gate or switch to allow the conveyor to be overloaded at maximum opening.
当在任何给定时间里仅需打开一个进料口时，应限制闸门或开关装置在最大开度时不允许使输送机超载。
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