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  2. GWR Toad - Wikipedia

    en.wikipedia.org/wiki/GWR_Toad

    3 "Toad" brake vans of the Great Western Railway The GWR Toad is a class of railway brake van, designed by and built for the Great Western Railway.Used by the GWR from 1894, and post-1947 by the Western Region of British Railways, its role was a safety brake on goods trains in the West of England, the Midlands and Wales.

  3. Langmuir (unit) - Wikipedia

    en.wikipedia.org/wiki/Langmuir_(unit)

    The langmuir (symbol: L) is a unit of exposure (or dosage) to a surface (e.g. of a crystal) and is used in ultra-high vacuum (UHV) surface physics to study the adsorption of gases. It is a practical unit, and is not dimensionally homogeneous, and so is used only in this field. It is named after American physicist Irving Langmuir.

  4. Press brake - Wikipedia

    en.wikipedia.org/wiki/Press_brake

    A press brake bending a sheet of steel. A press brake is a type of brake, a machine used for bending sheet metal and metal plate. [1] It forms predetermined bends by clamping the workpiece between a matching top tool and bottom die. [2] Bending process A high-tonnage hydraulic press brake Liwei CNC 2000T 12M Heavy Duty model

  5. Bending (metalworking) - Wikipedia

    en.wikipedia.org/wiki/Bending_(metalworking)

    Bending process. In press brake forming, the work piece is positioned over a die block and a punch then presses the sheet into the die block to form a shape. [1] Usually bending has to overcome both tensile stresses and compressive stresses.

  6. Machine press - Wikipedia

    en.wikipedia.org/wiki/Machine_press

    A press brake is a special type of machine press that bends sheet metal into shape. A good example of the type of work a press brake can do is the back-plate of a computer case. Other examples include brackets, frame pieces and electronic enclosures. Some press brakes have CNC controls and can form parts with accuracy to a fraction of a ...

  7. Langmuir - Wikipedia

    en.wikipedia.org/wiki/Langmuir

    Langmuir (unit), a unit of exposure of an adsorbate/gas to a substrate used in surface science to study adsorption; Langmuir Cove, a cove in the north end of Arrowsmith Peninsula, Graham Land, Antarctica; Langmuir monolayer, a one-molecule thick layer of an insoluble organic material spread onto an aqueous subphase in a Langmuir-Blodgett trough

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