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  1. Dictionary
    pressure gauge

    noun

    • 1. an instrument showing the pressure of fluid: "an oil pressure gauge"

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  2. heatingsystemwiki.com › what-pressure-should-gas-boiler-beWhat Pressure Should Gas Boiler Be: A Comprehensive Guide

    7 hours ago · The pressure gauge on a gas boiler typically comes with different markings and color-coded zones to indicate the optimal pressure range. The ideal pressure is often marked as a green zone on the gauge, with red zones indicating low or high pressure levels that should be avoided.

  3. en.wikipedia.org › wiki › High-speed_railHigh-speed rail - Wikipedia

    1 day ago · High-speed rail ( HSR) is a type of rail transport network utilizing trains that run significantly faster than those of traditional rail, using an integrated system of specialized rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines built to handle speeds above 250 km/h (155 mph) or upgraded lines ...