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  2. File:Foreskin retraction manually.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Foreskin_retraction...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses ...

  3. File:Lancaster landing gear retraction and extension video ...

    en.wikipedia.org/wiki/File:Lancaster_landing...

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  4. Seat belt - Wikipedia

    en.wikipedia.org/wiki/Seat_belt

    [citation needed] Motorized or door-affixed shoulder belts hinder access to the vehicle, making it difficult to enter and exit—particularly if the occupant is carrying items such as a box or a purse. Vehicle owners tend to disconnect the motorized or door-affixed shoulder belt to relieve the nuisance when entering and exiting the vehicle ...

  5. Power door locks - Wikipedia

    en.wikipedia.org/wiki/Power_door_locks

    Pressing a button on the key unlocks all of the car doors. Another button locks the car. In 1980, Ford Motor Company introduced an external keypad-type keyless entry system, wherein the driver entered a numeric combination —either pre-programmed at the factory or one programmed by the owner— to unlock the car without the key.

  6. Landing gear - Wikipedia

    en.wikipedia.org/wiki/Landing_gear

    The landing gear represents 2.5 to 5% of the maximum takeoff weight (MTOW) and 1.5 to 1.75% of the aircraft cost, but 20% of the airframe direct maintenance cost. A suitably-designed wheel can support 30 t (66,000 lb), tolerate a ground speed of 300 km/h and roll a distance of 500,000 km (310,000 mi) ; it has a 20,000 hours time between overhaul and a 60,000 hours or 20 year life time.

  7. Detent - Wikipedia

    en.wikipedia.org/wiki/Detent

    To resist movement (or when creating incremental steps), methods are employed which include a spring-loaded ball detent that locates in small incremental depressions, or a piece of spring steel that snaps into position on flat surfaces or shallow notches milled into the shaft or wheel.

  8. Pre-flight safety demonstration - Wikipedia

    en.wikipedia.org/wiki/Pre-flight_safety...

    A Royal Australian Air Force aircraftswoman demonstrating the use of an oxygen mask during a pre-flight safety demonstration on board an Australian Airbus A330 MRTT. A pre-flight safety briefing (also known as a pre-flight demonstration, in-flight safety briefing, in-flight safety demonstration, safety instructions, or simply the safety video) is a detailed explanation given before take-off to ...

  9. Dog (engineering) - Wikipedia

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

    In engineering, a dog is a tool or part of a tool, such as a pawl, that prevents or imparts movement through physical engagement. [1] It may hold another object in place by blocking it, clamping it, or otherwise obstructing its movement.