data revision meaning in Chinese

数据更新

Gdp growth in the first three months compared with the same period a year ago was the highest quarterly rate since at least 2004 ( data revisions make earlier comparisons difficult )
与去年同期相比，一季度gdp的增长速度，至少自2004年以来，是增长最快的一个季度。
From october 12 through 22 , the whole network was locked , with all the work in relation to civil construction , local data revision or exchange software upgrading being halted
10月12日至10月22日，又实施封网措施，这期间禁止一切工程施工、局数据修改及交换机软件版本的升级工作。