“major fog signal”的概念、定义、翻译、参考文献-科学参考

单词	major fog signal
释义	major fog signal [`mā·jǝr `fäg ´sig·nǝl] ^NAVIGATION A sound signal which has a normal range of reception in excess of 2 miles (3.2 kilometers), to aid watercraft in avoiding obstacles.
随便看	observation of fire observation spillover observation well observed fire observed latitude observed longitude observed position observer observing angle obsession obsessive-compulsive neurosis obsessive-compulsive personality obsidian obsidianite obsolescence obsolete obstacle obstacle clearance obstacle clearance box obstetric obstetrical analgesia obstetric forceps obstetrician obstetrics obstipation

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