“grade line”的概念、定义、翻译、参考文献-科学参考

单词	grade line
释义	grade line [¦grād `līn] ^{CIVIL ENGINEERING} A line or slope used as a longitudinal reference for a railroad or highway.
随便看	Charmat process charmed particle charmed quark charmonium Charmouthian charnockite charnockite series Charon Charophyceae Charophyta Charpak-Massonet current distribution system Charpit's method Charpy test charring ablator chart chartaceous chart catalog chart comparison unit chart convergence chart datum chart desk charted depth charted visibility chart house chartlet

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