During your production upgrade, you want to make a note to move or purge the vpuserinfo and log file after the conversion process has been validated.
在生产升级期间，当转换过程生效后，应该做好记录以便移动或清除vpuserinfo和日志文件。
2
If analytical equipment is available, purge system until oxygen content of residual gas is either less than or meets the process specification impurity level.
如果有分析仪器的话，一直净化设备，直到残留气体的氧含量或者低于或者满足工艺规范的纯度级别。
3
The dechlorination process by air purge and vacuum in ionic membrane caustic soda units were introduced.