data recovery on demand

• 数据按需恢复

data recovery on demand的用法和样例：

例句

1. Conclusion The changes in refraction following strabismus surgery decrease over an extended period of time.Different operation need different time for recovery.
   结论斜视手术对眼球屈光状态的影响是可恢复的，不同术式所需恢复的时间不同。