安全边际率 meaning in English

margin of safty ratio

The improvements of the du pont system of financial analysis include : introducing analysis of cash flows to the du pont system of financial analysis ; introducing managerial accounting data , marginal contribution analysis , safe marginal analysis and leverage analysis to the du pont system of financial analysis ; introducing analysis of value added accounting indices to the du pont system of financial analysis
杜邦财务分析体系的主要改进有：在杜邦财务分析体系中引入现金流量表数据进行现金流量分析；在杜邦财分析体系中引入管理会计数据，进行边际贡献分析、安全边际率分析及杠杆分析；在杜邦财分析体系中引入增值会计数据分析企业对社会的贡献。