英语释义

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

片语

Directional Bipolarization Antenna双极化定向天线

localizer directional array antenna着陆航向信标定向阵列天线

directional HF antenna定向高频天线

directional E antenna定向天线

directional Paraboloid Antenna物面天线

directional array antenna引向阵列天线

Directional Yagi Antenna定向八木天线

directional U antenna定向天线

directional scanning antenna定向扫描天线

英汉例句

• tht article gps positioning technology, dc servo technology, research and design a set of moving targets can implement automatic tracking of the directional antenna control system.

  文章以gps定位技术、直流伺服技术为基础，研究设计一套能够对移动目标实行自动跟蹤的定向天线控制系统。

• if the ship's egc receive facility shares a directional antenna with an inmarsat mes, only the msi broadcast through the satellite which is being tracked by the mes will be received.

  如果船舶egc接收设施与inmarsat移动站共同使用一个定向天线，则只能接收由ses正在跟蹤的卫星所播发的海上安全信息。

• for the directional antenna and wireless channel characteristics, there are many directional antenna based access control protocols have been proposed to achieve channel spatial reuse.

  针对定向天线和无线信道的特点，有许多基于定向天线的接入控制协议被提出来，以实现信道的空分复用。

• and then time slot allocation algorithms and routing protocols based on directional antenna are designed for ifdl. at last performance of the network is simulated with opnet.

  然后设计、提出了基于定向天线的适用于机间数据链的时隙分配算法及路由协议并利用opnet仿真软件验证了网络性能。

• while mid-wave antenna is mostly iron tower antenna, we do not use directional antenna except that we need special service in special area.

  中波天线大部分采用铁塔天线，非特殊地形或特别要求的服务区外，均采用不定向天线。

• the effect of directional antenna on the performance of dsr routing protocol is studied in this paper.

  本文研究了方向性天线对dsr路由协议性能的影响。

• in casr, fixed relays equipped directional antenna are located at the vertex of the hexagonal cell for sectorization and shared by three adjacent cells.

  该结构将固定中继置于六边形小区的顶点并采用裂向天线实现中继裂向，使同一中继为三个小区所共用。

• in order to effectively use directional antenna space division multiplexing features, while reducing some of its directional influence to bring the need to propose a new wireless mac protocol.

  为了有效地利用定向天线的空分复用的特点，同时减少由于其方向性带来的一些影响，需要提出一种新的无线mac协议。