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  2. Roughing pump - Wikipedia

    en.wikipedia.org/wiki/Roughing_pump

    The term "roughing pump" derives from the vacuum range it works in, "rough vacuum", above 1x10 −3 torr (0.1 Pa). Pumps that operate in the high vacuum ranges typically don't operate, or only operate inefficiently, at atmospheric pressures , whereas pumps that work efficiently at atmospheric pressure usually cannot produce a vacuum lower than ...

  3. Toilet roll holder - Wikipedia

    en.wikipedia.org/wiki/Toilet_roll_holder

    A classic horizontal-axle, wall-mounted toilet roll holder. A toilet-roll holder, also known as a toilet paper dispenser, is an item that holds a roll of toilet paper. Common models include a hinged length of wire mounted horizontally on a wall, a thicker axle either recessed into a wall or mounted on a frame, or a freestanding vertical pole on ...

  4. Turbomolecular pump - Wikipedia

    en.wikipedia.org/wiki/Turbomolecular_pump

    Most turbomolecular pumps employ multiple stages, each consisting of a quickly rotating rotor blade and stationary stator blade pair. The system is an axial compressor that puts energy into the gas, rather than a turbine, which takes energy out of a moving fluid to create rotary power, thus "turbomolecular pump" is a misnomer.

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  7. Choking, smothering, slapping: More teens are having rough ...

    www.aol.com/lifestyle/choking-smothering...

    Teens and young adults are getting the message that rough sex is common, expected and desirable. (Photo illustration: Yahoo News; photo: Getty Images) (Photo illustration: Yahoo News; photo: Getty ...