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| English | Latvian |
| light pollution | gaismas piesārņojums |
| separator of light liquids A mechanical device for separating and removing residues from fuel and lubricating oil from waste water coming from filling stations and industrial plants in order to avoid pollution of water bodies; this system is based on the different specific weights of water and fuel residues that float on the water and can be easily removed | vieglo šķidrumu atdalītājs |
| ultraviolet light | ultravioletā gaisma |