The artificial neuron model and backbone structure of neural network is introduced.

介绍了人工神经元模型与神经网络基本结构。

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A simple method to quantitatively determine the the backbone structure of a protein from a set of electron density maps at medium resolution has been described.

本文叙述了一个简单的从中等分辨率电子云密度图确定蛋白质骨架结构的方法。

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There is a conventional story line in the newsroom culture that provides a backbone and a ready-made narrative structure for otherwise confusing news.

在新闻编辑室文化中有一条传统的故事主线，它能为那些其他情况下混乱的新闻提供一个基本的格式和现成的叙事结构。

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The Pattern, which was introduced in 1971, forms the backbone of the European racing calendar for non-handicap races and gives the season a structure.

BBC: The big races