| 释义 |
DEFINITIVE EXAMPLES 权威例句〔closed circuit〕A television transmission circuit with a limited number of reception stations and no broadcast facilities.闭路电视：具有数量有限的接收台且无广播设施的电视传输线路美国传统〔downlink〕A transmission path for the communication of signals and data from a communications satellite or other space vehicle to the earth and back.下引线：通信卫星或其它航天器之间传递数据信号的传输线路美国传统〔drop〕Electronics A connection made available for an input or output unit on a transmission line.【电子学】 传输线：可用于联接输入或输出元件的导线美国传统 |