词汇	non-negative number
释义	non-negative number 非负数
随便看	twostage injection moulding two stage injection moulding two stage injector two-stage injector two-stage internal-loop airlift reactor two stage intestine transplantation two-stage intestine transplantation two stage inverted pendulum two-stage ionic exchange two-stage isolation system two-stage iterative two-stage joint two-stage Kalman filter two-stage kalman filtering two-stage least square method two stage least squares two-stage least squares two-stage least squares2sls two-stage least squares2slsestimator two-stage least squares 2sls estimator two-stage least squares estimator two stage least squares method two-stage least squares method two-stage least squares residuals two stage lift