为此，我们引入了后备模式的概念。
介绍城市轨道交通中，移动闭塞系统的后备模式的由来、定义及其功能。
This paper describes the origin, definition and function of fallback mode of moving block system for urban rail transit.
如果扩展了LDAP模式，那么必须维护修改，并在修改之前和之后备份整个目录。
If you have extended LDAP schema, you must maintain the changes and back up the entire directory prior to and after the change.
如果能够在出现故障后备份日志尾部，则可以使用完整恢复模式将数据库恢复到故障点。
The full recovery model allows a database to be recovered to the point of failure, assuming that the tail of the log can be backed up after the failure.
从这个意义上讲，现阶段中国青少年足球后备人才培养模式仍处于探索调整时期，还有许多需要改进的方面。
In this sense, at this stage, the China Youth soccer training back-up mode is still in the adjustment period to explore, there are still many aspects need to be improved.
体育传统项目学校以“体教结合”为特点的后备人才培养模式，在这种特定的历史时期将是机遇与挑战并存。
Traditional sports schools "Integration" as the characteristics of reserve personnel training mode, in this particular historical period will be both opportunities and challenges.
提出通过网球学校培养模式所培养出的后备人才具有综合素质高、社会适应能力强等优点。
Proposed model through the tennis schools to help train the reserve talents with comprehensive high-quality, social adaptability advantages.
青少年排球运动后备人才培养的体制不完善，管理模式单一，山东省排球运动后备人才培养现状及对策研究训练经费缺乏。
The system of reserve personnel training of teenagers' volleyball movement is not perfect, the management mode is single, training funds are scarce.
解决方案有两种模式，一是标准(PB24)和后备电池(PB 24 BB)。
The solution is available in two models-standard (PB24) and battery backup (PB24BB).
解决方案有两种模式，一是标准(PB24)和后备电池(PB 24 BB)。
The solution is available in two models-standard (PB24) and battery backup (PB24BB).
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