backward voltage的用法和樣例：
例句
- The buildup of the opposing voltage to its full value requires a longer time.
反向電壓上升到它的滿(mǎn)值需要較長(cháng)的時(shí)間。 - Applying the opposite voltage bias to widen the tunneling gap and raise the electrical resistance would reopen the switch.
施加反向電壓以增大穿隧間隙，提高電阻，可以重新將開(kāi)關(guān)斷開(kāi)。
