数值计算误差 meaning in Chinese

error in numerical calculation

6 . this thesis solves the rapid dem producing problem for large - scale terrain " massive data " . at the same time , it implements robustness processing on each significant algorithm , which avoids the potential failure in dem producing due to the mathematical computing errors
实现了大比例尺地形“海量数据”快速建立dem的问题，同时对各个关键算法均进行了健壮性处理，从而避免了数值计算误差可能带来的dem建立失败。