| |||
plain soil | |||
pure clay | |||
| |||
pure clay |
纯 土: 35 phrases in 12 subjects |
Agriculture | 1 |
Architecture | 1 |
Bridge construction | 1 |
Chemistry | 1 |
Desert science | 1 |
Engineering geology | 2 |
Forestry | 2 |
General | 2 |
Metallurgy | 1 |
Oil / petroleum | 3 |
Technology | 16 |
Textile industry | 4 |