| 单词 | ground |
| 释义 | ground A conducting connection, whether intentional or accidental, by which an electric circuit is connected at some point to the earth, or to some other large conducting body that can serve in place of the earth. The point can be a single point common to a great many circuits, such as an equipment frame, chassis, or cabinet. A ground serves as a reference point, a return path for an electrical signal, and to carry current safely away from a circuit in the event of a fault. In the event that earth is not available as a ground, the conducting frame of an aircraft, spacecraft, or land vehicle not conductively connected to the earth can serve as ground. See also circuit, current, electricity, and signal. |
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