例句與造句

1. based on the coherent modulation model, doppler information is obtained by using ad633 analog multiplier and active low pass filter; 3
   以相干檢波一般模型為基礎，采用ad633模擬乘法器和有源低通濾波器實現了對多卜勒信息的提?。?
2. It's difficult to find active low pass filter in a sentence. 用active low pass filter造句挺難的