signal wire的用法和樣例：
例句
- A balanced line driver can also have an input signal called an "Enable" signal.
在平衡差分系統中，驅動器通過只傳送一個信號的一對信號線來傳送電壓。 - An unbalanced line is generally a single-conductor shielded cable with the center conductor carrying the signal and the shield at ground potential.
對於非平衡式信號線來說，就是一根被屏蔽了的信號線，這個中心信號線傳輸信號，且相對於地電勢。
