Which select and use reasonably frequency converter is the basic condition to realize the functions, its control way is the key to decide the usage property of the frequency converter.
而变频器的合理选用是实现这些功能的基本条件，其控制方式又是决定变频器使用性能的关键所在。
The paper discussed the basic structure and functions of monitoring system of plank pressure based on embedded system underground, and introduced the key techniques to realize this system.
讨论了基于嵌入式系统的井下顶板压力监测系统的基本结构和所实现的功能，详细介绍了实现该系统的关键技术。
It may realize the functions including basic information inquiry according to the jurisdiction, including books author, publishing house, publication date and some basic information;
可以实现的功能包括： 根据权限的图书基本信息的查询，包括图书的作者、出版社、出版日期等基本信息；
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