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  2. BL 13.5-inch Mk V naval gun - Wikipedia

    en.wikipedia.org/wiki/BL_13.5-inch_Mk_V_naval_gun

    The BL 13.5 inch Mk V gun [note 2] was a British heavy naval gun, introduced in 1912 as the main armament for the new super-dreadnought battleships of the Orion class.The calibre was 13.5 inches (343 mm) and the barrels were 45 calibres long at 607.5 inches (15.43 m).

  3. McDonnell Douglas MD-80 - Wikipedia

    en.wikipedia.org/wiki/McDonnell_Douglas_MD-80

    The "main improvement" was the installation of Pratt & Whitney JT8D-290 engines (never built) with a 1.5 in larger diameter fan that would allow for a 6 dB reduction in exterior noise. [27] The MD-80 Advanced was to incorporate the advanced flight deck of the MD-88, including a choice of reference systems, with an inertial reference system as ...

  4. Coaxial power connector - Wikipedia

    en.wikipedia.org/wiki/Coaxial_power_connector

    Generic plugs are often described by their inside diameter, such as 2.1 mm DC plugs. After the two common 5.5 mm OD (Outer Diameter) plugs, the next-most common size is 3.5 mm OD with a 1.3 mm ID (Inner Diameter), usually about 9.5 mm in length, although both longer and shorter versions also exist. These 3.5 mm OD plugs are normally used for ...

  5. Europlug - Wikipedia

    en.wikipedia.org/wiki/Europlug

    Example of a Europlug. The Europlug is a flat, non-rewirable two-pole, round-pin domestic AC power plug, rated for voltages up to 250 V and currents up to 2.5 A. [1] It is a compromise design intended to connect low-power Class II appliances safely to the many different forms of round-pin domestic power socket used across Europe.

  6. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    To achieve a heat flow from the gaseous flow center to the wall of the condenser, the temperature of the liquid refrigerant must be lower than the condensation temperature. Additional subcooling can be achieved by heat exchange between relatively warm liquid refrigerant leaving the condenser and the cooler refrigerant vapor emerging from the ...

  7. BL 13.5-inch Mk I – IV naval gun - Wikipedia

    en.wikipedia.org/wiki/BL_13.5-inch_Mk_I_–_IV...

    The gun was designed to match the new large guns of the French Amiral Baudin-class battleships. Development and manufacture occurred far slower than intended. [3] The first ships armed with the 13.5 in gun were four of the Admiral-class battleships: Anson, Camperdown, Howe and Rodney, which were laid down in 1882-83 and completed in 1888-89. [4]

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