第一阶段：计划与定义：
Planning and Definition
· Product Concept Proposal (M0)
· Design Inputs - Integrated Design Plan (M1)

第二阶段：设计开发与（内部）验证
Design Development and Verification
· Evaluation Release (ME)
· Release Components/Parts (M2)
· Design Verification (MV)

第三阶段：设计转移（这个不会翻译）与（外部）验证
Design Transfer and Validation
· Sales Announcement (MS)
· Product Validation & Release (M3)

第四阶段：产品生产和商业化
Product Release and Commercialization
· Unrestricted Production (M4)
· Product Vitality (M5 - Periodic Review)
· Decision to Stop Sales and Production (M6)

第五阶段：产品退市
Product Retirement
· Communicate End-of-Product Life with Customers (M7)
· Decision to Scrap Spares (M8)
· End-of-Product Data Management (M9)