- Manganese green sand
- фирм. марганцевый зелёный песок (среда, наполнитель в фильтрах для удаления из воды железа, марганца, сероводорода; представляет собой зелёный песок, содержащий высшие оксиды марганца)
Англо-русский строительный словарь. 2013.
Manganese green sand
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