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| Spanish | English |
| arena asfáltica | tar sand |
| arena asfáltica | tar sand A sandstone in which hydrocarbons have been trapped; the lighter compounds evaporate, leaving a residue of asphalt in the rock pores |
| arena de forja | forgery sand |
| arena fina | fine sand |
| arena movediza | windblown sand |
| arena plana | sand flat |
| arena plana | sand flat A sandy tidal flat barren of vegetation. A tidal flat is an extensive, nearly horizontal, marshy or barren tract of land that is alternately covered and uncovered by the tide, and consisting of unconsolidated sediment (mostly mud and sand). It may form the top surface of a deltaic deposit |
| Chorro de arena usado | spent blasting grit |
| chorro de arena usado | spent blasting grit |
| clasificador de arena | grit extractor-classifier |
| duna de arena | sand dune |
| duna de arena | sand dune An accumulation of loose sand heaped up by the wind, commonly found along low-lying seashores above high-tide level, more rarely on the border of large lakes or river valleys, as well as in various desert regions, where there is abundant dry surface sand during some part of the year |
| extracción de arena | sand extraction The extraction of sand by mining for building purposes and for the extraction of heavy minerals such as rutile and zircon |
| filtración lenta a través de arena | slow sand filtration |
| filtración lenta a través de arena | low-rate sand filtration |
| filtro intermitente de arena | intermittent sand filter |
| filtro lento de arena | slow sand filter |
| filtro rápido de arena | rapid sand filter |
| manejo de arena | sand management |
| manejo en arena | sand management |
| nube de arena | drifting sand |
| prados calcáreos de arenas xéricas | xeric and calcareous grasslands |
| Residuos de arena y arcillas | waste sand and clays |