“proximity warning indicator”的概念、定义、翻译、参考文献-科学参考

单词	proximity warning indicator
释义	proximity warning indicator [präk`sim·ǝd·ē ¦wȯrn·iŋ `in·dǝ´kād·ǝr] ^NAVIGATION An airborne instrument which produces a warning signal indicating the approach of an aircraft on a possible collision course. Abbreviated PWI.
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