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| Subject | English | Lithuanian |
| environ. | activated sludge Sludge that has been aerated and subjected to bacterial action; used to speed breakdown of organism matter in raw sewage during secondary waste treatment | aktyvintas dumblas |
| life.sc., environ. | activated sludge | aktyvusis dumblas |
| life.sc., environ. | activated sludge respiration inhibition test | aktyviojo dumblo kvėpavimo slopinimo tyrimas |
| life.sc. | modified semi-continuous activated sludge test | modifikuotas tariamai nepertraukiamas aktyviojo dumblo metodas |
| life.sc. | semi-continuous activated sludge test | tariamai nepertraukiamas aktyviojo dumblo metodas |
| life.sc. | semi-continuous activated sludge unit | tariamai nepertraukiamas aktyviojo dumblo įrenginys |