water-cooled tube
61November class submarine — Class overview Name: project 627 / 627A / 645 Builders: shipyard No. 402 in …
62Icy Ball — In the early part of the 20th century, it was thought that inexpensive refrigeration would be a great boon for mankind.IcyBall was a name given to two early refrigerators, one made by Australian Sir Edward Hallstrom in 1923, and the other design… …
63RBMK — is an acronym for the Russian reaktor bolshoy moshchnosti kanalniy ( ru. Реактор Большой Мощности Канальный) which means High Power Channel Type Reactor , and describes a class of graphite moderated nuclear power reactor which was built in the… …
64M1918 Browning Automatic Rifle — Not to be confused with Browning BAR. Rifle, Caliber .30, Automatic, Browning, M1918 The M1918A2 BAR Type …
65BTR-50 — Infobox Weapon name=BTR 50 caption=Ex Syrian or ex Egyptian BTR 50PK APC in Yad la Shiryon Museum, Israel. 2005. origin=USSR type=Amphibious Tracked Armoured Personnel Carrier is vehicle=yes service=1954 present used by=See Operators. wars=See… …
66Taprogge — GmbH is a medium sized company based in Wetter, Germany. The company is named after founding brothers Ludwig and Josef Taprogge. Founded in 1953, the company is known for its tube cleaning systems for steam turbine condensers, heat exchangers and …
67Nuclear thermal rocket — Sketch of nuclear thermal rocket …
68List of IBM products — The following is a list of notable products from the International Business Machines (IBM) Corporation and its predecessor corporations, beginning in the 1890s, and spanning punched card machinery, time clocks, and typewriters, via mainframe… …
69rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
70Nuclear fuel cycle — The nuclear fuel cycle, also called nuclear fuel chain, is the progression of nuclear fuel through a series of differing stages. It consists of steps in the front end, which are the preparation of the fuel, steps in the service period in which… …
