Concept of limit displacements of primary support system of railway tunnel are presented, and the method for determining the limit displacements is introduced systematically.
阐述了隧道支护系统极限位移的意义，系统地介绍了初期支护极限位移的确定方法。
Most switches that support a VIP can also support a policy of primary system or secondary system, so that traffic goes to the primary system unless it is unavailable or fails the validation.
大部分支持VIP的交换机也能支持主用系统或备用系统的策略，以便流量跑到主用系统那里，除非它不可用或验证失败。
System configurations support failover and disaster recovery, as primary and backup systems may be separated by many miles.
系统配置支持故障转移和灾难恢复，而主系统和备份系统可以放置在距离很远的两个位置。
But it is very primary in comparison with technical language and international criteria, this is because it lacks related support from the system.
尽管在技术语言上与国际水准相比还比较初级，这与缺乏相应的体制支持有关。
These tools offer PC enthusiasts more flexible and granular control over PRIMAry system support components.
这些工具可使计算机爱好者对其主要的系统支持元件进行更加灵活的细微控制。
In the suggestion, aim to the establishment of mechanisms for primary school English teachers' addition, propose a creative idea to establish "threshold" type for education support system.
在对策建议中，针对建立农村小学英语教师补充机制，创造性的提出了确立“门槛式”的支教制度。
18-point-support system is used as axial support in the 1 meter telescope primary mirror.
一米级天文望远镜主镜常采用18点底支承设计，以降低主镜面在重力作用下产生的变形误差。
18-point-support system is used as axial support in the 1 meter telescope primary mirror.
一米级天文望远镜主镜常采用18点底支承设计，以降低主镜面在重力作用下产生的变形误差。
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