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  2. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    1. Center line, the central axis of a feature. 2. Class, for example, "paint per spec XYZ revision C type 1 class 2" may be abbreviated as "paint per spec XYZ REV C TY 1 CL 2" or even in some cases "paint per spec XYZ-C-1-2". (The latter practice is not uncommon but is cryptic for workers with minimal training and experience. The first two ...

  3. Industrial computed tomography - Wikipedia

    en.wikipedia.org/wiki/Industrial_computed_tomography

    Industrial computed tomography (CT) scanning is any computer-aided tomographic process, usually X-ray computed tomography, that uses irradiation to produce three-dimensional internal and external representations of a scanned object. Industrial CT scanning has been used in many areas of industry for internal inspection of components.

  4. Crest and trough - Wikipedia

    en.wikipedia.org/wiki/Crest_and_trough

    A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point of the wave. When the crests and troughs of two sine waves of equal amplitude and frequency intersect or collide, while being in phase with each other, the result is called constructive ...

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  6. CT2 - Wikipedia

    en.wikipedia.org/wiki/CT2

    However, the use of TDD made available many frequency bands for CT-2 use, since a "paired" return path was not needed. An American company, Cellular 21, Inc. (later to become Advanced Cordless Technologies, Inc.) headed by broadcaster Matt Edwards, petitioned the FCC to permit the use of CT2 technology in the US.

  7. Knuckle thread - Wikipedia

    en.wikipedia.org/wiki/Knuckle_thread

    Knuckle threads with a flat 30 degree flank thread angle are standardized in DIN 405 for inch pitches and diameters ranging from 8 mm to 200 mm. [3] A more recent standard DIN 20400 uses metric thread pitch and lists diameters from 10 mm to 300 mm. [4] As DIN is a German organization, many instances of the DIN thread charts [5] write numbers with a comma as the decimal marker.

  8. Play Just Words Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/just-words

    If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online!

  9. Corps of Royal Canadian Electrical and Mechanical Engineers

    en.wikipedia.org/wiki/Corps_of_Royal_Canadian...

    The Corps of Royal Canadian Electrical and Mechanical Engineers (RCEME) (French: Corps du génie électrique et mécanique royal canadien) is a personnel branch of the Canadian Armed Forces (CF) that provides army engineering maintenance support. All members of the corps wear army uniform.