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| English | Finnish |
| light fluid separator | kevyiden nesteiden erottamislaite |
| light pollution | valosaaste |
| light-scattering technique | valon sirontamenetelmä |
| 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 | kevyiden nesteiden erotin |
| separator of light liquids | kevyiden nesteiden erotin |
| southern lights | revontulet (aurora australis) |
| ultraviolet light absorption method | auringonvalon absorptioon perustuva menetelmä |