“seven-tenths rule”的概念、定义、翻译、参考文献-科学参考

单词	seven-tenths rule
释义	seven-tenths rule [¦sev·ǝn `tenths ´rül] ^NAVIGATION A thumb rule which states that the approximate distance to an object broad on the beam equals seven-tenths of the distance traveled by a craft while the relative bearing (right or left) changes from 22.5° to 45° or from 135° to 157.5°, neglecting current and wind.
随便看	televiewer televise television television and radar navigation system television antenna television bandwidth television broadcast band television broadcasting television camera television camera tube television channel television emission television film scanner television interference television monitor television network television pickup station television picture tube television-radar air navigation television receive-only antenna television receiver television reconnaissance television recording television relay system television repeater

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