“sight distance”的概念、定义、翻译、参考文献-科学参考

单词	sight distance
释义	sight distance [`sīt ´dis·tǝns] ^OPTICS The distance from which an object at eye level remains visible to an observer.
随便看	umbrella antenna umbrella roof Umbrept Umbriel Umkehr effect Umklapp process UMP umpire unaka unakite unambiguous name unamplified back bias unarmed unary operation unattended operation unattended time unavailable energy unavoidable delay unavoidable-delay allowance unavoidable set of configurations unbalanced cutter chain unbalanced hoisting unbalanced line unbalanced output unbalanced shothole

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