而联邦铁路管理局说这种新型“安全控制系统”将只应用在6万5000英里铁路上(铁路总里程约为14万多英里)，但铁路行业估计它将覆盖大半个铁路网络。
Whereas the FRA says that the new safety system will apply to only 65, 000 miles (out of a total of over 140, 000), the industry reckons it will cover more than half the network.
安全监控系统在国有煤矿得到了普遍应用，但没有一个统一的管理模式，不能充分发挥监控系统的应有作用。
The safety supervising system have been used widely in state-owned coal mines, but its function have not operate well because of no uniform management mode.
会计电算化为管理和决策提供了及时准确的财务信息，但其信息系统的安全性也受到了挑战。
Computerized accounting provides immediate and precise financial information for management and decision, but it faces the challenge of safety of information system.
但现有的一些网络安全系统未能将上述技术有机地加以结合，不能很好地兼顾系统执行效率，对系统内部缺乏细粒度的安全管理。
But some network security systems cannot combine these technologies, cannot give attention to efficiency of system, and scarce of fine-granularity inner security management.
安全监控系统在国有煤矿得到了普遍应用，但没有一个统一的管理模式，不能充分发挥监控系统的应有作用。
The safety supervising system have been used widely in state-owned coalmines, but its function have not operate well because of no uniform management mode.
但现有的网络安全保障或管理系统，虽然能够获取大量的安全数据，却缺乏有效的数据融合和协同管理机制。
Existing network security or management systems can collect lots of security data, but lack the mechanism of effective data fusion and cooperative management.
但现有的网络安全保障或管理系统，虽然能够获取大量的安全数据，却缺乏有效的数据融合和协同管理机制。
Existing network security or management systems can collect lots of security data, but lack the mechanism of effective data fusion and cooperative management.
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