| 1. | Smoking - cart ; definitions , quality and safety requirements
吸烟车辆.质量和安全要求定义 |
| 2. | Drds space engineering - ground systems and operations - documents requirements definitions
航天工程.地面系统和操作.文件要求定义 |
| 3. | Drds space engineering - ground systems and operations - part 2 : documents requirements definitions
航天工程.地面系统和运行.第2部分:文件要求定义 |
| 4. | Drds space engineering - ground systems and operations - part 2 : documents requirements definitions ; english version en 14737 - 2 : 2004
航天工程.地面系统和操作.第2部分:文件要求定义 |
| 5. | These requirements define functionality that is recommended ; otherwise , some users will have difficulty working with the page
这些要求定义必需的功能；如果不具备这些功能，某些用户将根本无法使用网页。 |
| 6. | Refrigerating systems and heat pumps . safety and environmental requirements . part 1 : basic requirements , definitions , classification and selection criteria
制冷系统和热泵.安全和环境要求.第1部分：基本要求定义分类和选择原则 |
| 7. | Refrigerating systems and heat pumps - safety and environmental requirements - part 1 : basic requirements , definitions , classification and selection criteria
制冷系统和热泵.安全和环境要求.第1部分:基本要求定义分类和选择准则 |
| 8. | Specification for refrigerating systems and heat pumps - safety and environmental requirements - basic requirements , definitions , classification and selection criteria
制冷系统和加热泵规范.安全性和环境要求.基本要求定义分类和选择规范 |
| 9. | These requirements define functionality that is required ; otherwise , some users will not be able to work with the page at all
网页必须满足wcag优先级1的所有可访问性要求。这些要求定义必需的功能；如果不具备这些功能，某些用户将根本无法使用网页。 |
