standard attenuator的用法和樣例：
例句
- And it can be used as variable optical attenuator and electro-optic detector, too.
同時(shí)可以用作保偏可調光衰減器和電光探測器。 - An amplifier or attenuator may be needed to ensure that the required level of power is transmitted through the switch.
可能就需要一個(gè)放大器或衰減器，以確保通過(guò)開(kāi)關(guān)傳輸所需的功率。
