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primary surveillance radar (psr)中文什么意思

發(fā)音:   用"primary surveillance radar (psr)"造句

例句與用法

  1. A ssr can provide more useful information than primary surveillance radar ( psr ) but is subject to the proper functioning of the aircraft s transponder
    二次監(jiān)察雷達(dá)較一次監(jiān)察雷達(dá)能提供更多有用的資料，但須依賴航機(jī)上應(yīng)答器之正常運(yùn)作。
  2. For more than 25 years , the old radar served as a primary surveillance radar ( psr ) with coverage of 200 nautical miles for en - route air traffic surveillance . it is necessary to replace the old radar because of its age and difficulty in acquiring spares
    運(yùn)作逾二十五年的舊雷達(dá)為一支監(jiān)察雷達(dá)，具備二百海里以內(nèi)航空交通航路監(jiān)察功能。由于舊雷達(dá)老化，及采購該雷達(dá)的零件亦十分困難，故有需要進(jìn)行更換。

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