Noun:

1. an electrical device for attenuating the strength of an electrical signal

atprep.在；向；达n.基普(老挝货币基本单位)(=att)；[化]砹(极不稳定放射性元素)abbr.密封的(=airtight)abbr.气温(=air temperature)Atias阿蒂亚斯

1. And it can be used as variable optical attenuator and electro-optic detector, too.
   同时可以用作保偏可调光衰减器和电光探测器。
2. An amplifier or attenuator may be needed to ensure that the required level of power is transmitted through the switch.
   可能就需要一个放大器或衰减器，以确保通过开关传输所需的功率。