The present paper reported a new method of structural classification of viruses. All animal viruses were classified by the parameters of the capsid aad morpho-structure of nucleic acid.

本文报告了病毒的结构分类的一种新方法，即依据衣壳参数和核酸的形态结构特征进行分类。

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The essay briefly analyzes the causes, characteristics, classification, propagation of viruses and also puts forward some virus-preventing measures.

对计算机病毒的产生、病毒的特征、病毒的分类及其传播途径、防治措施，提一些看法。

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Secondly, through the establishment of computer viruses commonly used technical analysis of the classification, to reveal the mechanism of the virus.

其次，通过对计算机病毒编制常用技术的分类分析，以揭示病毒的机理。

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Most terrifying of all, with the dawn of the era of genetic engineering, even nations with relatively unsophisticated technology bases can acquire toxic viruses that defy ready classification, require complex antidotes if any exist and can penetrate the charcoal filtration systems of the best protective equipment.

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