常見(jiàn)例句雙語(yǔ)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(gè)主要概唸，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