 |
| |||
| 压力强度; 压强 | |||
| intensity of pressure: 14 phrases in 4 subjects |
| Bridge construction | 2 |
| Hydroelectric power stations | 3 |
| Oil / petroleum | 2 |
| Technology | 7 |
|
| |||
| 压力强度; 压强 | |||
| intensity of pressure: 14 phrases in 4 subjects |
| Bridge construction | 2 |
| Hydroelectric power stations | 3 |
| Oil / petroleum | 2 |
| Technology | 7 |