恢复时间间隔 meaning in English

erholungszeitspanne recovery time interval

Sql server estimates how many data modifications it can roll forward in the recovery time interval
Sql server将估计有多少数据修改可以在恢复时间间隔中前滚。
Sql server typically issues a checkpoint in a database when the number of data modifications made in the database after the last checkpoint reaches the number sql server estimates it can roll forward in the recovery time interval
通常情况下，如果自上次检查点执行以后数据库中所做的数据修改数量达到了sql server所估计的可以在恢复时间间隔中前滚的修改的数量， sql server将在数据库中执行一个检查点。