谁帮忙将下面中文摘要翻译为英文，急用（不要用翻译软件翻的。。。））

Question

铁路信号系统是保障铁路运输安全的重要基础设备。随着电子技术的发展，铁路信号产品越来越多以集成电路为核心，其可靠性特性和对系统的影响发生了根本变化，因此使用可靠性工程理论对信号设备进行可靠性研究，是保障铁路安全与运输效率的重要手段。
本文针对ZPW-2000A无绝缘移频轨道电路的可靠性进行研究。ZPW-2000A型轨道电路被广泛应用在自动闭塞系统中，已成为保证列车行车安全的重要铁路信号基础设备。由于ZPW-2000A是在法国UM71无绝缘轨道电路技术引进、国产化基础上结合国情进行的技术再开发，所以给出的可靠性指标较为模糊。因此本文采用可靠性工程理论来研究ZPW-2000A的系统可靠性，具有重要的研究价值和意义。本文着眼于对系统建立可靠性框图和故障树模型，结合《GJB／Z 299B-98电子设备可靠性预计手册》，分析各个模块可靠性参数，对整个系统进行可靠性预计。针对系统模块分析其失效模式和后果分析，作为对故障树模型的扩充。
本文从理论上对系统进行可靠性分析，应用美国瑞蓝公司系列软件中的BlockSim，建立ZPW-2000A系统的可靠性框图与故障树模型，对各个模块的可靠性参数做出预计，通过Blocksim进行仿真模拟，得到相关参数。针对发送器N+1结构和接收器0.5+0.5结构进行模拟仿真。同时对系统模块进行故障模式影响分析，形成FMEA报告，这作为对故障树的补充和完善。

Answer 1

Railway signal system is to protect the security of rail transport infrastructure. With the development of electronic technology, railway signal IC products to more and more as the core, and its reliability characteristics and the impact of the system has changed fundamentally, so the use of reliability engineering theory to study the reliability of the signal equipment is to protect Railway safety and efficiency of an important means of transport.
In this paper, no insulation ZPW-2000A frequency shift orbit to study the reliability of the circuit. ZPW-2000A-type track circuit has been widely used in automatic block system, to ensure that the train has become an important traffic safety infrastructure of railway signals. ZPW-2000A as a result of the French non-UM71 track circuit insulation technology imports, domestic production based on the combination of technical conditions to develop, so given the reliability of indicators is less clear. In this paper, the reliability of the project is therefore to study the theory of ZPW-2000A system reliability, an important research value and significance. This article focuses on the reliability of the system block diagram and fault tree model, combined with "GJB / Z 299B-98 the reliability of electronic equipment is expected to manual," Analysis of the reliability parameters of each module, the reliability of the entire system is expected. Analysis module for the system and the consequences of its failure mode analysis, as the expansion of the fault tree model.
In this paper, a theoretical analysis of system reliability, application Riverstone Blue Series software company BlockSim, the establishment of ZPW-2000A system reliability block diagram and fault tree model, the reliability of the parameters of each module is expected to make through to Blocksim simulation, the relevant parameters. N +1 for the transmitter and receiver structure of 0.5 +0.5 simulation. At the same time, modules of the system failure mode and effect analysis, FMEA report form, which as a Fault Tree added and improved.

Answer 2

The railway signal system is the important foundation of railway transportation safety equipment. With the development of electronic technology, the railway signal products with more integrated circuit as the core, the reliability of the system characteristic and fundamental changes take effect, so use reliability engineering theory to analyze the reliability of signal equipment and ensure safety and efficiency of railway transportation.
Aiming at ZPW - 2000A no insulation frequency shift of track circuit reliability. ZPW type - 2000A track circuit is widely used in automatic block system, has become an important guarantee the safety of railway train basic signal equipment. Because ZPW - 2000A is in France UM71 jointless track circuit technology based on introduction and localization of national combination technology development, so the reliability indexes are given. This article adopts the reliability engineering theory to study ZPW - 2000A system reliability, the research has important significance and meaning. This article focuses on the establishment of system reliability block diagram and the fault tree model and combining the GJB/Z 299B - 98 electronic equipment reliability prediction manual, analysis, reliability parameters for each module of the whole system reliability prediction. According to its failure mode analysis module and consequences of the fault tree analysis, as the expansion of the model.
The paper theoretically the system reliability analysis, an application software BlockSim blue company series, ZPW - 2000A system reliability block diagram and the fault tree model, the reliability of the parameters of each module is expected to make BlockSim through simulation, simulation, related parameters. According to the transmitter and receiver N + 1 0.5 + 0.5 structure simulation. Also on the system module, failure mode analysis report, this as FMEA supplement and complete fault tree.

Answer 3

Railway signal system is to protect the security of rail transport infrastructure. With the development of electronic technology, railway signal IC products to more and more as the core, and its reliability characteristics and the impact of the system has changed fundamentally, so the use of reliability engineering theory to study the reliability of the signal equipment is to protect Railway safety and efficiency of an important means of transport.

In this paper, no insulation ZPW-2000A frequency shift orbit to study the reliability of the circuit. ZPW-2000A-type track circuit has been widely used in automatic block system, to ensure that the train has become an important traffic safety infrastructure of railway signals. ZPW-2000A as a result of the French non-UM71 track circuit insulation technology imports, domestic production based on the combination of technical conditions to develop, so given the reliability of indicators is less clear. In this paper, the reliability of the project is therefore to study the theory of ZPW-2000A system reliability, an important research value and significance. This article