以下为句子列表：
英文: Taking the fieldbus control system of 750 V direct current power supply system in Beijing metro line Batong as an example, the application of the PROFIBUS technique in the power supply system of metro is discussed, and the hardware and software structure
中文: 摘要以北京地铁八通线750V直流供电系统现场总线控制系统为例，介绍过程现场总线(PROFIBUS)技术在地铁供电领域的应用，论述系统的硬件、软件结构及其工作原理。
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英文: This paper outlines the composition of the system, elaborate on principle of its signal collecting subsystem, software structure and functions of other subsystems, and discusses methods for solving the simultaneity problems between these subsystems.
中文: 文中首先介绍了系统的构成，论述了信号采集系统的采集原理和软件系统的体系结构以及各子系统的功能，并对子系统间的并发性问题进行了讨论。
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英文: A multiuser electric meter with prepay in IC card based on the STT B singlechip is introduced in this paper. The acting principle and key technology of it are explained,and then the hardware and software structure are given.
中文: 介绍了一种基于STT B单片机的多用户IC卡预付费电表的研制，阐明了工作原理和关键技术，给出了硬件、软件的结构。
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