In the network the sorts of computer virus are various and we can not catch the speed of its renewing.After comparing many kinds of virus, in order to be close to reality, I choose the "Worm."
当今网络上计算机病毒不但种类繁多而且更新的速度之快更是令人目不暇接。
Many kinds of computers can be connected to an Internet, and each computer can serve a specialized role, allowing an Internet to offer a wide variety of services to its users.
多种计算机都可以连入互联网，每台计算机都可以有一独特作用，于是一个互联网就可以向它的用户提供各式各样的业务。
This article synthetically lead in some kinds of transportation-model and the result of their simulations, advancing some ideas of the quantum devices physical model and its computer aided design.
本文综述了量子器件的几种输运模型及其模拟结果，并对量子器件物理模型及其辅助设计提出了设想。
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