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| ссылочный порт (A port that defines the internal and external ports of an actor reference. Reference ports can be placed only on the outer border of an actor reference shape. They can be used as anchors for bindings) | |||
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reference port : 8 短语, 5 学科 |
| 导航 | 1 |
| 水文学 | 1 |
| 海洋学（海洋学） | 2 |
| 航海 | 3 |
| 造船 | 1 |