Many researcher and manager focus on how to plan and control the cost of projects effectively in a multi-enterprise cooperating environment.
如何在多企业协作环境下进行有效的协同项目成本计划与控制，是许多研究者和管理者重点关注的问题。
This research, regards Dawen river in semi-humid region as example, has put forward water pollution control projects and aquatic ecological environment restoration measurements.
本文以半湿润地区大汶河流域为例，研究提出水污染控制方案和水生态环境恢复的措施。
The result provides valuable reference for projects including noise control diagnosis acoustical environment design etc.
计算结果可为噪声控制、故障诊断、声环境设计等工程实际应用提供有价值的参考。
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