二阶调变
adolescent mutation period
delta modulation
适应性二阶调变
1620
125MW steam turbine
adaptive delta modulation
二阶变系数偏微分方程
Second-order coefficient-changed partial different
二阶变系数齐次微分方程
homogeneous differential equation
二阶变系数齐次线性微分方程
second order homogeneous linear differential equation with variable coefficient
二阶变系数微分方程
second order differential equation
二阶变系数线性微分方程
the various coefficient linear differential equati
second-order linear differential equation with var
二阶调平
Two-order horizontal alignment
广义二阶key-stone变换
two order of general key-stone transform
一阶二阶逼近
first second order approximation