| |||
| 集料级配; 骨料级配 | |||
| |||
| 集料级配; ★ 骨料级配; 骨粒等级 | |||
|
grading of aggregates : 4 phrases in 3 subjects |
| Bridge construction | 1 |
| Electronics | 1 |
| Technology | 2 |
| |||
| 集料级配; 骨料级配 | |||
| |||
| 集料级配; ★ 骨料级配; 骨粒等级 | |||
|
grading of aggregates : 4 phrases in 3 subjects |
| Bridge construction | 1 |
| Electronics | 1 |
| Technology | 2 |