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| 系统设计说明书 | |||
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| 系统设计规范; 系统设计说明 | |||
| 系统设计规格说明 | |||
| English thesaurus | |||
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| SDS | |||
| System Design Specification: 5 phrases in 3 subjects |
| Aviation | 2 |
| Electronics | 2 |
| Space | 1 |
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