摘要：作为南京市争创国家环保模范城重要内容的污水处理厂及其收集系统的建设正在全面展开。
ABSTRACT: in Nanjing, wastewater treatment and collection system is being built, and it is an important department for Nanjing to become the nation environment protection exemplar city.
摘要介绍了大型氨厂锅炉给水泵转子抱死事故的原因，对其进行分析，并对修复过程中采取的方法及技术措施进行了总结。
This article introduces the cause and analyses the accident of the rotor holding in death of the boiler feedwater pump summing-up the way and technique measure in the process of repairing.
流程图和摘要说明确定被现代精炼厂使用的典型的批准的过程。
The flow diagrams and summary descriptions define typical licensed processes used by modern refineries.
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