drum pump
51Monotype System — The Monotype system is a set of two machines, the Monotype keyboard and the Monotype caster, which are used to typeset printed matter. A Monotype operator enters text on a Monotype keyboard, on which characters are arranged in the QWERTY… …
52Boiler — For the Limp Bizkit song, see Boiler (song). A portable boiler (preserved, Poland) …
53Stock Aitken Waterman — Stock Aitken Waterman, sometimes known as SAW, were a UK songwriting and record producing trio who had great success during the mid late 1980s and early 1990s with many of their productions. The three can be considered to be the most successful… …
54Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 …
55Royal Enfield — Infobox Defunct Company company name = Enfield Cycle Co. Ltd. company successor = Royal Enfield Motors Ltd. (formerly Enfield of India) foundation = 1893, as Enfield Manufacturing Co. Ltd. defunct = 1970 fate = Ended production. location =… …
56Technology of the Song Dynasty — The Song Dynasty ( zh. 宋朝; 960–1279 CE) provided some of the most significant technological advances in Chinese history, many of which came from talented statesmen drafted by the government through imperial examinations.The ingenuity of advanced… …
57Supermarine Spitfire (early Merlin powered variants) — Infobox Aircraft name =Spitfire type =Fighter manufacturer =Supermarine caption =Spitfire Vc launching from USS Wasp designer =R. J. Mitchell first flight =5 March 1936 introduction =1938 retired =1955, RAF status = primary user =Royal Air Force… …
58City of Bath Bach Choir — The City of Bath Bach Choir (CBBC), based in Bath, Somerset, England, is a choir, founded in October 1946 by Cuthbert Bates, who was also a founding father of the Bath Bach Festival in 1950. The choir gave its inaugural concert in June 1947 in… …
59M35 2½ ton cargo truck — For other uses, see M35 (disambiguation). Truck, Cargo, 2½ Ton, 6×6, M35 An M35 2½ ton cargo truck Type Medium Truck Place of origin …
60Dirichlet eigenvalue — In mathematics, the Dirichlet eigenvalues are the fundamental modes of vibration of an idealized drum with a given shape. The problem of whether one can hear the shape of a drum is: given the Dirichlet eigenvalues, what features of the shape of… …
