在回音壁前，游客们不再献祭，而是大声喊叫，希望能听见自己的回声。
At Echo Wall, visitors now offer cries instead of sacrifices, hoping to hear their voices bounce back to them.
将视网膜前的条带状回声分为4类。
The preretinal ribbon like echo was classified into 4 different types.
结果化疗前86 .1 %病例有脾脏肿大，所有病例脾内均有低回声病灶。
Results There were 86 1% cases with splenomegaly and all cases with hypoechoic nodules in spleen before chemotherapy.
基于前馈神经网络的自适应回声消除方法。
A novel adaptive method based on feed-forward neural networks for echo cancellation is proposed in this paper.
基于前馈神经网络的自适应回声消除方法。
A novel adaptive method based on feed-forward neural networks for echo cancellation is proposed in this paper.
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