After you set TRACKMOD to YES, you must backup the database before allowing applications to change data.
在将TRACKMOD设置为YES之后,您必须在允许应用程序更改数据之前备份数据库。
2
At the same time they have setupback-up data centres in other locations that can take over the activities at any time if a major disaster occurs.
同时,它们还在其它地点建立了后备数据中心,可以随时在重大空难发生时采取行动。
3
Based on the measured ground stress data, a 3d non-linear finite element back analysis numerical model for ground stress is setup and the fault and fissure concentrated zone is simulated.