英语词汇“Sector antenna”字怎么读，Sector antenna的拼音、意思释义、用法及组词造句例句翻译-英语翻译词典-学习充电-依恋情感网

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词汇	Sector antenna
分类	英语词汇英语翻译词典
释义	Sector antenna 英语百科 Sector antenna A sector antenna is a type of directional microwave antenna with a sector-shaped radiation pattern. The word "sector" is used in the geometric sense; some portion of the circumference of a circle measured in degrees of arc. 60°, 90° and 120° designs are typical, often with a few degrees 'extra' to ensure overlap and mounted in multiples when wider or full-circle coverage is required (see photos below). The largest use of these antennas is as antennas for cell phone base-station sites. They are also used for other types of mobile communications, for example in WiFi networks. They are used for limited-range distances of around 4 to 5 km.
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