 |
| |||
| 耐久性系数 | |||
| 耐久性因素; 耐久性系数; 混凝土的耐久性指数; 混凝土耐久性指数 | |||
|
durability factor : 2 phrases in 2 subjects |
| Hydroelectric power stations | 1 |
| Technology | 1 |
|
| |||
| 耐久性系数 | |||
| 耐久性因素; 耐久性系数; 混凝土的耐久性指数; 混凝土耐久性指数 | |||
|
durability factor : 2 phrases in 2 subjects |
| Hydroelectric power stations | 1 |
| Technology | 1 |