a picture-in-a-picture option
monochrome picture-in-picture (PIP)
picture in picture insertion system
picture in picture special effect transmission system
picture in picture TV set
picture out picture TV set
picture-to-picture operation
2+1-dimensional Schrodinger equations
Contracted Schrodinger equation
Coupled higher-order nonlinear Schrdinger equations
Coupled nonlinear SchrSdinger equations
coupled Schrodinger equations
coupled Schrodinger-Boussinesq equations
耦合Schrodinger-Boussinesq方程组
coupled Schrodinger-Kdv equation
coupled Schrodinger-KdV system