分压接法：将变阻器的两个固定端分别与电源的两极相连，由滑动端和任一固定端连接到电路。
Partial Pressure Connection: the varistor of the two fixed end of the bipolar power supply, respectively connected by a sliding side and either a fixed terminal connected to the circuit.
滑动条移向快速响应这一端则意味着更多的错误，但是在慢半拍手机上的更快输入速度。
Sliding to the fast Response side means a few more errors, but faster input on slower phones.
用户将开关控件从一端滑动到另外一端，表示选择两个值中的一个。
Users slide a switch control from one side to the other, revealing one of two values.
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