李振民葉怡成陳世峰江宗原連立川2014-10-272014-10-272007-04-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/22711數值地形模型測量實習虛擬實境電腦輔助學習Digital terrain modelSurveying practiceVirtual realityComputer-aided learning數值地形模型測量實習之虛擬實境學習系統Virtual Reality Learning System for Digital Terrain Model Surveying Practice