concrete compressing-machine
1tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
2technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
3pneumatic device — Any of various tools and instruments that generate and use compressed air. Examples include rock drills, pavement breakers, riveters, forging presses, paint sprayers, blast cleaners, and atomizers. Compressed air power is flexible, economical,… …
4List of Edison patents — Below is a list of Edison patents. Thomas Edison was an inventor who, it is said, accumulated 1500 plus patents worldwide for his inventions. Nearly 1100 of Edison s patents were in the United States, but other patents were approved in countries… …
5MythBusters (2005 season) — Country of origin Australia United States No. of episodes 26 (includes 7 specials) Broadcast Original channel Discovery Channel …
6Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
7Bamboo — For other uses, see Bamboo (disambiguation). Bamboo plant Bamboo forest in Kyoto, Japan Scientific classification Kingdom …
8Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a …
9Sound recording and reproduction — Sound recorder redirects here. For the audio recording program computer software, see Sound Recorder (Windows). Sound recording and reproduction is an electrical or mechanical inscription and re creation of sound waves, such as spoken voice,… …
10Operation Compass — Part of the Western Desert Campaign of World War II Italian soldiers taken prisoner during Operation Compass …
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