software key软件关键字softwaren.软件software cost estimation method软件成本估算方法Software Design for Mill Pacing轧制节奏的软件设计software attacks and protection软件攻击和防御software requirement refinement软件需求求精software configuration baseline软件配置基线Software Quality Assurance Plan软件质量担保计划software acquisition management软件项目采购管理software transportation project软件移植计划software design for testability软件测试性设计software engineering life cycle软件工程生命周期