消光比是指在最坏反射条件时，全调制条件下，逻辑“1”平均光功率与逻辑“0”平均光功率的比值。

Extinction ratio is ratio of logic "1" average optical power to logic "0" average optical power under the worst reflection and complete modulation condition.

youdao

该全光脉冲整形器利用波分复用器将控制光脉冲引入光纤环形镜中，控制光脉冲由于交叉相位调制在信号光上产生了非线性附加相移。

Control pulse is coupled into this pulse shaper by wavelength division multiplexer. Nonlinear phase shift of signal laser is induced by control pulse because of cross phase modulation.

youdao

我知道假如使用PWM(脉宽调制)模拟部分只需要做低通滤波就行了，否则就得全用模拟器件完成音频和视频。

I knew I would probably have to use some analog hardware to output the audio and video unless I used pulse-width modulation, in which case I would only need a low-pass filter.

youdao

Now here we have a situation where you have a completely concocted food, you have something like Twinkies to begin with, not something found in nature.

面对的全是人工调制食品,而非纯天然食品,以夹馅面包为例

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选