a-n signal的意思|示意

This paper analyses the characteristics of noise and presents the mernod of promoting S/N by inserting a band-pass pre-filter, which can reduce the Pe in data communication under small signal.

通过对噪声特性的分析，提出了用前置带通滤波器来提高信噪比的方法，改善微弱信号时数据通信的效果。

To understand further the molecular mechanism of its function, human neuroblastoma SK N SH cell line was chosen as a model to study its signal transduction pathway.

为了进一步阐明其作用的分子机制，以SK N SH成神经瘤细胞（SK细胞）为模型进行了研究。