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day television
| tracking system
| day television | |
| space | 昼间电视 |
| tracking system | |
| auto. | 追 踪系统 |
| avia. | 外测体制 |
| commun. railw. | 追踪系统 |
| math. | 跟踪系统 |
| space | 跟踪 体制 |
| |||
| 昼间电视 | |||
| day television: 5 phrases in 4 subjects |
| Advertising | 1 |
| Aviation | 1 |
| Electronics | 2 |
| Information technology | 1 |
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