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  2. Gray Marine 6-71 Diesel Engine - Wikipedia

    en.wikipedia.org/wiki/Gray_Marine_6-71_Diesel_Engine

    The 6-71 is an inline six cylinder diesel engine. [1] The 71 refers to the displacement in cubic inches of each cylinder. [1] The firing order of the engine is 1-5-3-6-2-4. [1] The engine's compression ratio is 18.7:1 with a 4.250 inch bore and a 5.00 inch stroke. [1]

  3. Detroit diesel 6051 quad-71 - Wikipedia

    en.wikipedia.org/wiki/Detroit_diesel_6051_quad-71

    The GM Diesel/Detroit Diesel model 6051 Quad power pack consists of four inline 2-stroke diesel 6-71 engines mounted to one gearbox, usually with one shaft coming out of the power unit. The power units were fitted on landing craft and ships during World War II , ships including LCI(L) , [ 1 ] Prab (741) and Nahka (751) were fitted with two of ...

  4. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    CH 3 CH 2 OH . Parentheses are used to indicate multiple identical groups, indicating attachment to the nearest non-hydrogen atom on the left when appearing within a formula, or to the atom on the right when appearing at the start of a formula: (CH 3) 2 CHOH or CH(CH 3) 2 OH . In all cases, all atoms are shown, including hydrogen atoms.

  5. HP-71B - Wikipedia

    en.wikipedia.org/wiki/HP-71B

    A HP-71 configuration with bar code wand and a custom application was widely used for data collection in the British Department of Health and Social Security (DHSS). Unlike HP-75 or HP-41 , the 71B could also act as a device in a HP-IL loop controlled by another device, allowing several of them in the same loop, communicating with each other ...

  6. Pressure–volume diagram - Wikipedia

    en.wikipedia.org/wiki/Pressure–volume_diagram

    Watt's indicator diagram. The PV diagram, then called an indicator diagram, was developed in 1796 by James Watt and his employee John Southern. [2] Volume was traced by a plate moving with the piston, while pressure was traced by a pressure gauge whose indicator moved at right angles to the piston. A pencil was used to draw the diagram.

  7. Shear and moment diagram - Wikipedia

    en.wikipedia.org/wiki/Shear_and_moment_diagram

    Shear and Bending moment diagram for a simply supported beam with a concentrated load at mid-span. Shear force and bending moment diagrams are analytical tools used in conjunction with structural analysis to help perform structural design by determining the value of shear forces and bending moments at a given point of a structural element such as a beam.

  8. Mechanical calculator - Wikipedia

    en.wikipedia.org/wiki/Mechanical_calculator

    The comptometer-type calculator was the first machine to receive an all-electronic calculator engine in 1961 (the ANITA mark VII released by Sumlock comptometer of the UK). In 1890 W. T. Odhner got the rights to manufacture his calculator back from Königsberger & C , which had held them since it was first patented in 1878, but had not really ...

  9. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    Lewis structure of a water molecule. Lewis structures – also called Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs) – are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.