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  2. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.

  3. File:Lever lock key parts.svg - Wikipedia

    en.wikipedia.org/wiki/File:Lever_lock_key_parts.svg

    English: The main parts of a lever-type lock. The Key Wards are to enable the key to pass over the Wards in the lock. The Key Wards are to enable the key to pass over the Wards in the lock. A lot of Key Wards have specific names, such as "Wheel Ward", "Sash Ward", "Box of Wards".

  4. Tannhäuser (opera) - Wikipedia

    en.wikipedia.org/wiki/Tannhäuser_(opera)

    The score includes parts for on-stage brass; however, rather than using French brass instruments, Wagner uses 12 German waldhorns. Wagner also makes use of the harp, another commonplace of French opera. Wagner made a number of revisions of the opera throughout his life and was still dissatisfied with its format when he died.

  5. Spare part - Wikipedia

    en.wikipedia.org/wiki/Spare_part

    Spare parts are an outgrowth of the industrial development of interchangeable parts and mass production. In an industrial environment, spare parts are described in several manner to distinguish key features of various spare parts. The following describes spare part types and their typically functionality. 1.

  6. List of railroad truck parts - Wikipedia

    en.wikipedia.org/wiki/List_of_railroad_truck_parts

    An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.

  7. List of compositions by Richard Wagner - Wikipedia

    en.wikipedia.org/wiki/List_of_compositions_by...

    2: piano: Sonata in D minor (1829; [4] lost) [5] [6] 5: piano: Sonata in F minor (1829; [4] lost) [7] [6] 16: piano 4-hands: Sonata in B-flat major, for four hands ...

  8. Die Walküre - Wikipedia

    en.wikipedia.org/wiki/Die_Walküre

    Osborne writes that, like Das Rheingold, Die Walküre is primarily a work for solo voices, but with better integration of the vocal parts into the overall musical structure. [66] As with its predecessor, Wagner composed Die Walküre under the principles he had defined in his book-length 1851 essay Opera and Drama , eschewing the traditional ...

  9. Free body diagram - Wikipedia

    en.wikipedia.org/wiki/Free_body_diagram

    In physics and engineering, a free body diagram (FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition. It depicts a body or connected bodies with all the applied forces and moments, and reactions, which act on the body(ies).