| 单词 | 卫星信号 |
| 释义 | 〔feedhorn〕A satellite dish component that captures the signal reflected from the dish surface and channels it into an amplifier.碟形卫星天线：碟形卫星信号接收器设备，可以捕捉自碟形表面所反射出来的讯号并传送至放大器〔WAN〕A communications network that uses such devices as telephone lines, satellite dishes, or radio waves to span a larger geographic area than can be covered by a LAN.广域网络，宽域网络：利用电话线路、卫星信号接收器或无线电波等设备的通信网路，其覆盖的地域大于局域网络 |
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