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概念信息

优选术语

创建: 2020-12-04T11:26:42Z

Altimetri radar  

定义

  • A radar altimeter (RA), radio altimeter (RALT), electronic altimeter, or reflection altimeter measures altitude above the terrain presently beneath an aircraft or spacecraft by timing how long it takes a beam of radio waves to travel to ground, reflect, and return to the craft. (en)

上位概念

款目词

  • 创建: 2020-12-04T11:26:42Z

    Radioaltimetri (it)

其他语言

URI

http://aims.fao.org/aos/agrovoc/c_27657add

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RDF/XML TURTLE JSON-LD 创建于 2019/9/4, 最后修改 2023/10/9