difference frequency generation 差频振荡 ; 差频方式是利用差频 ; 利用差频 ; 这种变换利用差频
Laser difference frequency generation 激光差频输出
nonlinear difference frequency generation 非线性光学差频
nonlinear optical difference frequency generation 非线性光学差频
cascaded sum-and difference-frequency generation 级联和频与差频二阶非线性效应
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