A less obvious but ubiquitous mass produced service is a computer operating system.
一个比较不明显的但是无处不在的大规模生产的服务是计算机操作系统。
Basic knowledge of computer operating skill;
具备基础的电脑操作能力；
In the computer operating system is the most important system software.
操作系统在计算机中是最重要的系统软件。
File processing system is an important part of the computer operating system.
文件处理系统是计算机操作系统的重要组成部份。
Abstract: Electronic computers since birth, computer operating system research has made considerable progress.
摘要：电子计算机诞生以来，计算机操作系统的研究取得了长足进展。
Abstract: Electronic computers since birth, computer operating system research has made considerable progress.
摘要：电子计算机诞生以来，计算机操作系统的研究取得了长足进展。
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