air-blast cooled
41Wright Whirlwind — The Wright Whirlwind was a family of air cooled radial aircraft engines built by Wright Aeronautical (originally an independent company, later a division of Curtiss Wright). The family began with 9 cylinder engines and later expanded to include 5 …
42zinc processing — Introduction preparation of the ore for use in various products. Zinc (Zn) is a metallic element of hexagonal close packed (hcp) crystal structure and a density of 7.13 grams per cubic centimetre. It has only moderate hardness and can …
43MythBusters (2010 season) — Country of origin Australia United States No. of episodes 25 (includes 4 specials) Broadcast Original channel …
44M1918 Browning Automatic Rifle — Not to be confused with Browning BAR. Rifle, Caliber .30, Automatic, Browning, M1918 The M1918A2 BAR Type …
45building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
46North American P-51 Mustang — P 51 redirects here. For other uses, see P51 (disambiguation). P 51 Mustang P 51 Mustangs of the 375th Fighter Squadron, 361st Fighter Group …
47M16 rifle — Rifle, 5.56 mm, M16 From top to bottom: M16A1, M16A2, M4A1, M16A4 Type Assault rifle Place  …
48Sellafield — Aerial view of the site …
49MythBusters (2006 season) — Country of origin Australia United States No. of episodes 28 (includes 2 specials) Broadcast Original channel Discovery Channel …
50Powder coating — is a type of dry coating, which is applied as a free flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a… …
