Network security assessment is a complex system engineering.
网络安全评价是一项复杂的系统工程。
Project cost management is a complex system engineering. It is a dynamic process.
项目成本管理是一个复杂的系统工程，是一个动态管理过程。
Facility layout is a complex system engineering involving many factors and targets.
工厂布置是一个复杂的系统工程，涉及要素繁多，有着不同的目标。
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