| 单词 | obstruction light |
| 释义 | > as lemmasobstruction light obstruction light n. Aeronautics a light placed on a tall building or structure as a warning to aircraft. ΘΚΠ society > travel > air or space travel > action of flying (in) aircraft > navigation of course of aircraft > [noun] > light for guidance of aircraft traffic light1912 beacon1918 flare path1919 airway beacon1926 obstruction light1934 marker1936 fixed light1960 1934 Jrnl. Royal Aeronaut. Soc. 38 728 The Air Ministry specified the number and type of obstruction lights which had to be fitted to each mast. 1991 Flying (BNC) UK and Eire navigation warnings are available, along with Air Nav. Obstruction Light unserviceabilities. < as lemmas |
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