《水利工程测量》精品课程 ●●●●● ●●●● ●●0 ●●● ●●●● 口水利工程测量的任务 The Tasks of Irrigation Projects 囗地面上点位的确定 The Ascertain of the points on the ground 用水平面代替水准面的限度 The horizontal level Instand of water level 测量工作的基本原则 The principle of Measure 场士子 XI'An University of Technology水利工程测量的任务 The Tasks of Irrigation Projects 地面上点位的确定 The Ascertain of the Points on the Ground    用水平面代替水准面的限度 The Horizontal Level Instand of water Level 测量工作的基本原则  The principle of Measure