结果：盆腔静脉曲张症患者盆腔内可见网络样无回声区及丛状或“彩球”样彩色血流信号，正常组未见上述改变。
Results: The patients with pelvic varicosis showed network like, non echo areas and plexiform or color ball shaped blood flow signals which were not found in control group.
本文概括地介绍了人工神经网络的概念以及这项新技术的研究方法，并且重点介绍了它在蝙蝠回声定位叫声识别方面的应用。
This paper preliminarily presents the concept of artificial neural networks and explains how to use this technology, focusing on the study of echolocation calls in bats.
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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