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
Hermite二次型
Hermite forme quadratique
半负定二次型
negative semidefinite quadratic form
半正定二次型
positive semidefinite quadratic form
不定二次型
indefinite quadratic form
indefinit quatratic form
部分二次二阶矩法
Part Second Order and Second Moment Method
参考模型逆线性二次型
model reference-inverse linear quadratic
model-reference inverse linear quadratic
乘性二次型
multiplicative quadratic form