英语词汇“null reference system”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	null reference system
释义	null reference system null reference system [′nəl ′ref·rəns ‚sis·təm] (navigation) A type of instrument landing system in which the antenna array consists of two elements, one twice as high as the other; the lower element radiates with maximum intensity along the glide path, while the upper element produces a signal null at the glide path angle.
随便看	expected value with perfect information expected vertical error expected wait time expected warranty cost expected week of childbirth expected won-loss expected years of life lost expected you for expecter expect for expect from expect from her expect from him expect from it expect from me expect from one expect from them expect from us expect from you expect further clearance expect further clearance via expect further routing expect her for expect higher altitude expect him for

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