The multilevel control system bases on PLC and industry control computer, which is made up of high-quality periphery modules.
系统以工控机和PLC为中心，配以高性能的模块化外设组成一体化的计算机多级控制系统；
The paper describes the system structure, control theory and its characteristic of the advanced drive device of the multilevel configuration control technology.
介绍了当今最先进的多电平结构的传动系统的组成结构、控制原理及主要特点。
Inference control in databases is a key field of multilevel secure database system (MLS-DBS) and is an important means to achieve database security.
数据库推理控制是研究高安全等级的安全数据库系统的关键技术之一，是保障数据库安全的重要手段。
A solution is given for the unstability caused by the wide system output for multilevel control of the force controller.
通过力控制器的分段调节，解决了由于系统输出变化范围太大而引起的不稳定性问题。
On the other hand, multilevel secure database system can not meet timing requirements, so the study of concurrency control protocol in SRTDBS is extremely important significance.
另一方面，安全数据库又不能满足实时性要求，所以对SRTDBS中并发控制协议的研究具有极其重要的意义。
On the other hand, multilevel secure database system can not meet timing requirements, so the study of concurrency control protocol in SRTDBS is extremely important significance.
另一方面，安全数据库又不能满足实时性要求，所以对SRTDBS中并发控制协议的研究具有极其重要的意义。
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