| |||
| 可变延迟时间 | |||
| 可变延迟 | |||
|
variable delay : 25 phrases in 8 subjects |
| Air defense | 3 |
| Automobiles | 1 |
| Computers | 1 |
| Earth sciences | 1 |
| Electronics | 12 |
| Space | 1 |
| Technology | 5 |
| Telecommunications | 1 |
| |||
| 可变延迟时间 | |||
| 可变延迟 | |||
|
variable delay : 25 phrases in 8 subjects |
| Air defense | 3 |
| Automobiles | 1 |
| Computers | 1 |
| Earth sciences | 1 |
| Electronics | 12 |
| Space | 1 |
| Technology | 5 |
| Telecommunications | 1 |