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  2. Electrochemical machining - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_machining

    Electrochemical machining (ECM) diagram. 1: Pump 2: Anode (workpiece) 3: Cathode (tool) 4: Electric current 5: Electrolyte 6: Electrons 7: Metal hydroxide. Electrochemical machining (ECM) is a method of removing metal by an electrochemical process.

  3. NGC 1 - Wikipedia

    en.wikipedia.org/wiki/NGC_1

    NGC 1 and NGC 2 as an optical double. At an estimated 140,000 light-years in diameter, [4] NGC 1 is roughly the same size as our galaxy, the Milky Way, which is believed to be approximately 160,000 light-years across. [6]

  4. Error correction model - Wikipedia

    en.wikipedia.org/wiki/Error_correction_model

    Several methods are known in the literature for estimating a refined dynamic model as described above. Among these are the Engle and Granger 2-step approach, estimating their ECM in one step and the vector-based VECM using Johansen's method.

  5. Equivalent circuit model for Li-ion cells - Wikipedia

    en.wikipedia.org/wiki/Equivalent_circuit_model...

    The equivalent circuit model (ECM) is a common lumped-element model for Lithium-ion battery cells. [ 1 ] [ 2 ] [ 3 ] The ECM simulates the terminal voltage dynamics of a Li-ion cell through an equivalent electrical network composed passive elements, such as resistors and capacitors , and a voltage generator .

  6. Capella (engineering) - Wikipedia

    en.wikipedia.org/wiki/Capella_(engineering)

    Capella was created by Thales in 2007, and has been under continuous development and evolution since then. The objective is to contribute to the transformation of engineering, providing an engineering environment which approach is based on models rather than focused on documents, piloted by a process, and offering, by construction, ways to ensure effective co-engineering.

  7. EAGLE (program) - Wikipedia

    en.wikipedia.org/wiki/Eagle_(program)

    EAGLE contains a schematic editor, for designing circuit diagrams. Schematics are stored in files with .SCH extension, parts are defined in device libraries with .LBR extension. Parts can be placed on many sheets and connected together through ports. The PCB layout editor stores board files with the extension .BRD.

  8. List of military electronics of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_military...

    Radar Warning Receiver (RWR) and Electronic Countermeasures system (ECM) U-2 Dragon Lady [59] BAE Systems: AN/ALQ-240: Electronic Support Measures (ESM) set: P-8 Poseidon: AN/ALQ-250: Eagle Passive/Active Warning and Sustainment System (EPAWSS) [60] F-15 Eagle: AN/ALQ-260: Digital Radio Frequency Memory (DRFM) countermeasures decoy: F-16 ...

  9. CALPHAD - Wikipedia

    en.wikipedia.org/wiki/CALPHAD

    CALPHAD stands for Computer Coupling of Phase Diagrams and Thermochemistry, a methodology introduced in 1970 by Larry Kaufman, originally known as CALculation of PHAse Diagrams. [1] [2] [3] An equilibrium phase diagram is usually a diagram with axes for temperature and composition of a chemical system. It shows the regions where substances or ...