常見例句雙語例句This paper introduced the conceptions concerning GPS height system, such as geodetic, orthometric and normal height system and deflection of the vertical.介紹了與G P S高程系統(tǒng)有關(guān)的幾個主要概念，即大地高系統(tǒng)、正高系統(tǒng)、正常高系統(tǒng)及垂線偏差； 返回 normal orthometric height