The smallest but most important category of computer systems for end users.
最小的，但最重要的一类计算机系统，为最终用户。
Home and business security systems and certain computer software and hardware fall into this category.
家用和商用安全系统及某些计算机软件和硬件都属于这类。
Determines whether the category is registered on the local computer.
判断分类是否登录在本机电脑上。
The second category may focus on computer science applications.
面向计算机科学应用。
The second category may focus on computer science applications.
面向计算机科学应用。
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