Secondly, in order to ensure the safety of the backup data, the system requires the network with excellent performance, accidents like network jam or network breakdown is not permitted.
其次，为了确保备份数据的安全性，对网络本身性能的要求也很高，不可以出现网络阻塞或网络意外中断等事件。
In bridge engineering, in order to prevent to fall Liang's earthquake damage or to ensure the seismic safety of bridge's bearing, usually set the horizontal seismic measures to limit device.
在桥梁工程中，为了防止落梁的震害或保证支座的抗震安全性，通常采用设置横向限位装置的抗震措施。
In order to ensure safety and top coal caving in time, the measures of pre-blasting or water pre-infusion to weaken top coal should be adopted.
为确保安全和顶煤及时垮落，应实施预爆破或预注水弱化顶煤措施。
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