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  1. unknown

    chemical composition and formula for common steel screws

    I would like to know the composition and chemical formula for the average steel screw. I teach an Earth Science class and would like general information or a lead as to where I might find this basic information.
  2. unknown

    Resonant Frequency of water molecule

    Approx, how many db's would it take to seperate the water?
  3. unknown

    dP Calculations trhough Valves with Multi-Phase Fluids

    Dear all, I am preparing a brief presentation on piping component. Any good reference/ ready made materials out there for me to grab/hold on that I can use. Kindly seek assistance. TQ
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