directional antenna中文什么意思

定向天线。

• directional:    adj. 1.方向的。 2.【无线电 ...
• antenna:    n. (pl. -nae , ant ...
• antenna (bi-directional):    天线（双向)

例句与用法

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1. An array of wave probes can be used as a directional antenna .
   排成阵列的测波仪，可作为波浪传播方向的感触器。
2. Broadside directional antenna
   垂射天线
3. In radiocommunications , the radiation in a lobe of a directional antenna
   在无线通信技术中,定向天线以某一波瓣辐射的电磁能。
4. Most of the former ad hoc network mac protocols were designed for omni - directional antenna systems
   以前关于adhoc网络mac层的协议都是针对全向天线所设计的。
5. Directional antennae allows the dsas to reduce background and wind noise without the need for a bulky parabolic dish
   定向天线，让员，以减少背景与风噪声，而不需要为笨重，抛碟。

英文释义

名词

1. an antenna that transmits or receives signals only in a narrow angle