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| application layer (A set of application models that take precedence over application models that are in lower application layers. The lowest layer is named SYS) | |||
| application layer; layer 7 | |||
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capa de aplicacion : 8 短语, 4 学科 |
| 化学 | 1 |
| 微软 | 4 |
| 环境 | 2 |
| 联合国 | 1 |