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| 时基信号 | |||
| 时间基准参考信号 | |||
| 时间基准信号; 标准时间信号 | |||
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time reference : 54 phrases in 13 subjects |
| Air defense | 2 |
| Artificial intelligence | 1 |
| Automobiles | 2 |
| Aviation | 2 |
| Chemistry | 1 |
| Electronics | 10 |
| General | 1 |
| Librarianship | 7 |
| Metallurgy | 1 |
| Oil / petroleum | 4 |
| Space | 7 |
| Statistics | 2 |
| Technology | 14 |