超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
二元二次Diophantine方程
binary quadratic diophantine equation
二元二次对角逼近
bivariate quadratic diagonal approximant
二元二次同余方程
quadratic congruence expression with two variables
二元二次原型
Binary quadratic primitive forms
二元二值周期自相关序列偶
Binary sequence pair with two-level periodic autocorrelation
binary sequence pair with two-level periodic autoc
二元切触有理插值
bivariate osculatory rational interpolant
bivariate osculatory rational interpolation