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| |||
| purification; clearance | |||
| decontamination | |||
| purification The removal of unwanted constituents from a substance; emission scrubbing | |||
| certificate of discharge | |||
| sludge removal | |||
| refining | |||
| zuivering: 68 phrases in 16 subjects |
| Agriculture | 4 |
| Chemistry | 6 |
| Coal | 3 |
| Customs | 1 |
| Economy | 1 |
| Electronics | 1 |
| Environment | 29 |
| Finances | 8 |
| General | 4 |
| Medical | 1 |
| Metallurgy | 3 |
| Natural sciences | 1 |
| Nuclear physics | 1 |
| Social science | 1 |
| Statistics | 1 |
| Transport | 3 |