“threshold lights”的概念、定义、翻译、参考文献-科学参考

单词	threshold lights
释义	threshold lights [`thresh´hōld ´līts] ^NAVIGATION Lights so placed as to indicate the longitudinal limits of that portion of a runway, channel, or landing path usable for landing.
随便看	sursassite surveillance surveillance approach surveillance radar surveillance satellite survey survey design survey foot surveying altimeter surveying sextant survey instrument survey meter surveyor's compass surveyor's cross surveyor's level surveyor's measure survey traverse survivability survivable route survival curve survival probability survival ratio survivor curve Surwell clinograph susannite

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