| |||
| показатель кислотности раствора (MichaelBurov) | |||
|
measure of the acidity of solution : 2 phrases in 1 subject |
| Oil / petroleum | 2 |
| |||
| показатель кислотности раствора (MichaelBurov) | |||
|
measure of the acidity of solution : 2 phrases in 1 subject |
| Oil / petroleum | 2 |