numerical pad数字盘numericaladj.数字的；用数字表示的numerical data processing数据处理Numerical controls system数控系统numerical control bending数控弯管numerical grid generation数值网格生成numerical manifold method数值流形方法numerical integral method数值积分法numerical drilling system数字化钻井系统Numerical Methods for PDE偏微分方程数值解法numerical cut-off value临界数值numerical modeling method数值建模方法