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  2. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    IEEE 200-1975 or "Standard Reference Designations for Electrical and Electronics Parts and Equipments" is a standard that was used to define referencing naming systems for collections of electronic equipment. IEEE 200 was ratified in 1975. The IEEE renewed the standard in the 1990s, but withdrew it from active support shortly thereafter.

  3. Seed drill - Wikipedia

    en.wikipedia.org/wiki/Seed_drill

    After this the grain is put in the hopper on top, from which the seed grains flow down to the drill which spaces and plants the seed. This system is still used today but has been updated and modified over time in many aspects; the most visible example being very wide machines with which one farmer can plant many rows of seed at the same time.

  4. Engineering drawing abbreviations and symbols - Wikipedia

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

    parts list: A list, usually tabular and often on the drawing (if not accompanying the drawing on a separate sheet), listing the parts needed in an assembly, including subparts, standard parts, and hardware. There is no consistently enforced distinction between an L/M, a BoM, or a P/L. PLM: product lifecycle management; plant lifecycle management

  5. Jethro Tull (agriculturist) - Wikipedia

    en.wikipedia.org/wiki/Jethro_Tull_(agriculturist)

    There were two boxes for the seed, and these, with the coulters, were placed one set behind the other, so that two sorts of seed might be sown at the same time. A harrow to cover in the seed was attached behind. [8] Tull also invented a turnip-drill somewhat similar to the other in general arrangement, but of lighter construction.

  6. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threa­ded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.

  7. No, cooking oil doesn't cause cancer — but new study links ...

    www.aol.com/no-cooking-oil-doesnt-cause...

    The question of seed oils and cancer started because seed oils are high in omega-6 fatty acids, some of which may promote inflammation in the body, research has shown.

  8. What’s the best treatment for ADHD? Large new study ... - AOL

    www.aol.com/news/best-treatment-adhd-large-study...

    Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. Attention deficit ...

  9. Button cell - Wikipedia

    en.wikipedia.org/wiki/Button_cell

    Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.