| |||
| 分层乱砌; 成层乱砌 | |||
|
coursed random : 15 phrases in 4 subjects |
| Architecture | 1 |
| Bridge construction | 1 |
| Electronics | 2 |
| Technology | 11 |
| |||
| 分层乱砌; 成层乱砌 | |||
|
coursed random : 15 phrases in 4 subjects |
| Architecture | 1 |
| Bridge construction | 1 |
| Electronics | 2 |
| Technology | 11 |