The development of water resources of the cities belongs to a huge complicated system engineering.
城市水资源开发是一项庞大的、复杂的系统工程。
Regulatory agencies are: human resources, engineering, purchasing department, production department, quality control department.
管理机构有：人力资源部、工程部、采购部、生产部、品控部。
School of Resources and Safety Engineering, Central South University; 2.
中南大学资源与安全工程学院；
School of Resources and Safety Engineering, Central South University; 2.
中南大学资源与安全工程学院；
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