- central vacuum
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a vacuum cleaner built into the fabric of a building, with a central motor and dirt bag and distributed points where a hose and appliances may be plugged in
Wikipedia foundation.
Wikipedia foundation.
Central vacuum cleaner — The power unit of a typical central vacuum cleaner for residential use A central vacuum cleaner (also known as built in or ducted) is a type of vacuum cleaner appliance, installed into a building as a semi permanent fixture. Central vacuum… … Wikipedia
Vacuum sewer — Vacuum sewers were first installed in Europe in 1882 but until the last 30 years it had been relegated to a niche market. The first who has applied the negative pressure drainage (so called vacuum sewerage) was the Dutch engineer Liernur in the… … Wikipedia
Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner … Wikipedia
Central Asia — Area 4,003,400 km2 (1,545,721 sq mi)[1] Population 61,551,945 … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… … Wikipedia
Vacuum (band) — Infobox Musical artist Name = Vacuum Img capt = Img size = Landscape = Background = group or band Alias = Origin = Sweden Genre = Synthpop, electronic Years active = 1996 ndash;present Label = Associated acts = URL = Current members = Mattias… … Wikipedia
Central processing unit — CPU redirects here. For other uses, see CPU (disambiguation). An Intel 80486DX2 CPU from above An Intel 80486DX2 from below … Wikipedia
Central Organization for Railway Electrification — केन्द्रीय रेल विद्युतीकरण संगठन, Central Organization for Railway Electrification Type Government Owned Industry Railways and Locomotives … Wikipedia
Geostrategy in Central Asia — Central Asia has long been a geostrategic location merely because of its proximity to several great powers on the Eurasian landmass. The region itself never held a dominant stationary population, nor was able to make use of natural resources… … Wikipedia