system requirements and implementations
| description
| system requirements and implementations | |
| avia. | 系统要求和执行 |
| description | |
| gen. | 说明 |
| interntl.trade. | 品种; 规格说明; 货物名称; 品种、规格说明; 项目; 详单 |
| space | 描述; 说明书 |
| tech. | 叙述 |
| |||
| 系统要求和执行 | |||
|
system requirements and implementations : 3 phrases in 1 subject |
| Aviation | 3 |