(The design of the security technology protection system is the first step to complete a security protection system engineering project, and it is also a very critical step. As we all know, the correctness and rationality of any project design will directly affect the implementation of the whole project. In addition, the design must have basis and certain steps to meet both user requirements and engineering specifications. Engineering design is divided into preliminary design and formal design. The preliminary design is sometimes called scheme design, which is a key step in the implementation of a security project.)
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