2. The DC and AC attenuator circuits provide ranging for the AC and DC functions. 直流和交流衰减器电路提供直流和交流功能的量程切换。
3. Direct Current (DC)|---|Direct current is current with no reversals in polarity. 直流|---|直流是指没有正负极性往复变化的电流。
英英解释
n.
1. the district occupied entirely by the city of Washington; chosen by George Washington as the site of
2. an electric current that flows in one direction steadily