Always maintain a document to track all the changes made on production environment.
请始终维护相应的文档来跟踪生产环境中的所有更改。
This may work in a closed loop where an application reads the document it has produced, but it is unlikely to work in a production environment where several applications work on the document.
在封闭的环境中，应用程序读取自己生成的文档，这种方法可能奏效，但是在多个应用程序使用文档的产品环境不大可能。
The forming causes of explosive tail gas in urea plant are analysed and countermeasures, based on some document and production practice, are given.
分析了尿素生产中爆炸性尾气形成的原因，借助于有关文献，结合生产实际，提出了预防对策。
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