| |||
twenty-four-second period |
秒 周期 : 11 phrases in 9 subjects |
Agriculture | 1 |
Automobiles | 1 |
Earth sciences | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
Geophysics | 1 |
Information technology | 1 |
Multimedia | 1 |
Technology | 2 |
Telecommunications | 1 |