 |
| |||
| neck down; sinking; sink (mark) | |||
| 凹缩: 10 phrases in 7 subjects |
| Automobiles | 1 |
| General | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Otorhinolaryngology | 1 |
| Plastics | 1 |
| Technology | 4 |
|
| |||
| neck down; sinking; sink (mark) | |||
| 凹缩: 10 phrases in 7 subjects |
| Automobiles | 1 |
| General | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Otorhinolaryngology | 1 |
| Plastics | 1 |
| Technology | 4 |