| |||
| 信号图解法 | |||
|
graphic method of : 15 phrases in 7 subjects |
| Agriculture | 1 |
| Bridge construction | 1 |
| Business | 3 |
| Earth sciences | 1 |
| Economics | 1 |
| Marketing | 1 |
| Technology | 7 |
| |||
| 信号图解法 | |||
|
graphic method of : 15 phrases in 7 subjects |
| Agriculture | 1 |
| Bridge construction | 1 |
| Business | 3 |
| Earth sciences | 1 |
| Economics | 1 |
| Marketing | 1 |
| Technology | 7 |