Terms for subject Earth sciences containing plain

English	Spanish
abyssal plain	llanura abisal
deep-sea plain	llanura abisal
flood plain	terreno inundable
plain bar type gauge,bar type gauge	calibre plano
plain cylindrical plug gauge	calibre tampón
plain cylindrical plug gauge	calibre cilíndrico
plain segmental type gauge	calibre plano
plain tube	tubo liso