 |
| |||
| circadian change 24 | |||
| hourly variation (量) | |||
| hourly variation | |||
|
小时变化 : 15 phrases in 6 subjects |
| Business | 1 |
| Commerce | 1 |
| Rail transport | 1 |
| Refrigeration | 1 |
| Technology | 8 |
| Telecommunications | 3 |
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