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    unit:ATM_T
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    http://qudt.org/vocab/unit/ATM_T

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    lang:en
    Technical Atmosphere
    lang:""
    A technical atmosphere (symbol: at) is a non-SI unit of pressure equal to one kilogram-force per square centimeter. The symbol 'at' clashes with that of the katal (symbol: 'kat'), the SI unit of catalytic activity; a kilotechnical atmosphere would have the symbol 'kat', indistinguishable from the symbol for the katal. It also clashes with that of the non-SI unit, the attotonne, but that unit would be more likely be rendered as the equivalent SI unit. Assay ton (abbreviation 'AT') is not a unit of measurement, but a standard quantity used in assaying ores of precious metals; it is \(29 1D6 \,grams\) (short assay ton) or \(32 2D3 \,grams\) (long assay ton), the amount which bears the same ratio to a milligram as a short or long ton bears to a troy ounce. In other words, the number of milligrams of a particular metal found in a sample of this size gives the number of troy ounces contained in a short or long ton of ore.
    lang:""
    0112/2///62720#UAA321
    lang:""
    http://en.wikipedia.org/wiki/Technical_atmosphere
    lang:""
    \(1 at = 98.0665 kPa \approx 0.96784 standard atmospheres\)
    lang:""
    at
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    att