 |
| |||
| 浮沉 | |||
|
float-and-sink : 30 phrases in 6 subjects |
| Drilling | 1 |
| Metallurgy | 6 |
| Mineralogy | 1 |
| Mining | 5 |
| Oil / petroleum | 1 |
| Technology | 16 |
|
| |||
| 浮沉 | |||
|
float-and-sink : 30 phrases in 6 subjects |
| Drilling | 1 |
| Metallurgy | 6 |
| Mineralogy | 1 |
| Mining | 5 |
| Oil / petroleum | 1 |
| Technology | 16 |