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| 紧固作业; 装卸作业 | |||
| 集装箱装卸作业操作; 码头作业; 终点作业 | |||
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terminal operation : 9 phrases in 5 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Electronics | 3 |
| Information technology | 3 |
| Technology | 1 |
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