beam (or blind) approach beacon system, a system for approaching a landing field by means of instruments.
| 单词 | θ206941 |
| 释义 | society > travel > air or space travel > action of flying (in) aircraft > navigation of course of aircraft > [noun] > landing guidance systems (1) B.A.B.S.1945 beam (or blind) approach beacon system, a system for approaching a landing field by means of instruments. |
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