Through the logical application of scientific and management principles over the life cycle of a system, system safety engineering attempts to achieve an optimum degree of safety.
通过在系统的生命周期内合理的应用科学的管理原则，系统安全工程就有望获得最佳的安全程度。
Article 3 the principles of enterprise application, two-level issuance and jurisdictional supervision shall be upheld in the administration work concerning the issuance of work safety licenses.
第三条安全生产许可证的颁发管理工作实行企业申请、两级发证、属地监管的原则。
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