 |
| |||
| 沥青基底层 (course) | |||
| 沥青基层 (course); 沥青基底层 (course); 沥青底层 (course); 黑色基层 (course); 含沥青粗砂垫层 (course) | |||
| bituminous base: 8 phrases in 3 subjects |
| Construction | 2 |
| Hydroelectric power stations | 1 |
| Technology | 5 |
|
| |||
| 沥青基底层 (course) | |||
| 沥青基层 (course); 沥青基底层 (course); 沥青底层 (course); 黑色基层 (course); 含沥青粗砂垫层 (course) | |||
| bituminous base: 8 phrases in 3 subjects |
| Construction | 2 |
| Hydroelectric power stations | 1 |
| Technology | 5 |