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Subsurface sand filter
| Глоссарий по архитектуре и конструкциям |
A wide bed, consisting of a number of lines of perforated pipe or drain tile surrounded by clean coarse aggregate, containing an intermediate layer of sand as filtering material, and provided with a system of underdrains for carrying off the filtered sewage.
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Perforated, английский
- In leather, this is the process of die-cutting small holes to form a pattern. the holes can vary in size, density and pattern. railroading: cutting fabric on the cross grain, usually to avoid seams in large upholstered pieces. fabric is also referred to as railroaded when the pattern runs horizontally off the bolt. fabric with directional patters or pile (such as velvet) should not be railroaded.
- Пер4х>рированный
Containing, английский
Intermediate, английский
- Between two others.
- Промежуточный
- Промежуточное звено
- Chemical term for an igneous rock containing 54 to 62% silica and usually
Underdrains, английский
Underdrain, английский
A drain, installed in porous fill, for drawing off surface water or water from the soil, as under the slab of a structure.
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Distemper brush, английский
A wide flat paintbrush with long bristles; used in applying distempers, such as calcimine.
Greenbelt, английский
- A wide area of parks, farmland, or undeveloped land surrounding a community.
- Зелёный пояс (вокруг города)
- Зеленая зона вокруг города зона посадок для закрепления почвы (на краю пустыни и т. п.)
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