| |||
| 平方总和开平方法 | |||
|
root-sum square method : 5 phrases in 3 subjects |
| Bridge construction | 2 |
| Hydroelectric power stations | 1 |
| Technology | 2 |
| |||
| 平方总和开平方法 | |||
|
root-sum square method : 5 phrases in 3 subjects |
| Bridge construction | 2 |
| Hydroelectric power stations | 1 |
| Technology | 2 |