按计算机病毒入侵系统的途径可将计算机病毒分为源码病毒、入侵病毒、操作系统病毒和外壳病毒。
According to a computer virus intrusion system approach can be divided into source virus, computer virus virus, operating system viruses and shell viruses.
病毒是只有少数基因和蛋白外壳的紧凑型生物实体,对生物工程有很大作用。
Compact biological entities with little more than a handful of genes and a protein coat, viruses lend themselves to engineering.
外壳型病毒将它们自己包裹在主程序的四周,对源程序不作修改。 外壳型病毒容易编写,这也正是约有一半病毒程序是这种类型的原因。
Shell viruses wrap themselves around a host program and don't modify the original program.Shell programs are easy to write,which is why about half of viruses are of this type.
In that case, we took the gene for the Hepatitis B protein.
在此种情况下,我们将乙肝病毒的基因同蛋白质外壳分离
The virus then can self-assemble, that is, you've made a lot of genetic material, you've made a lot of the structural pieces, there has to be some way that the virus can reassemble, repackage itself into active forms.
于是,病毒可以进行自组装了,也就是说,已经制造出大量的遗传物质,也制造出了大量蛋白质外壳,那么病毒就能通过某些方式,重新装配或者重新组合成活性状态
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