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单词 isobar
释义
isobar
Physics

  • 1. A line on a map or chart that joints points or places that have the same atmospheric pressure.

    2. A curve on a graph representing readings taken at constant pressure.

    3. One of two or more nuclides that have the same number of nucleons but different atomic numbers. Radium–88, actinium–89, and thorium–90 are isobars as each has a nucleon number of 228.

Chemistry

  • 1. A curve on a graph indicating readings taken at constant pressure.

    2. One of two or more nuclides that have the same number of nucleons but different atomic numbers. Radium–88, actinium–89, and thorium–90 are isobars as each has a nucleon number of 228.

Chemical Engineering

  • A condition representing constant pressure. Isobars are used on weather maps representing lines of constant atmospheric pressure. An isobaric process is a process that operates with constant pressure.

Geology and Earth Sciences

  • Line on a weather map connecting points at the same atmospheric pressure. On surface charts the values are ‘reduced’ to sea level. Such isolines are drawn at a given interval in millibars. Contours of isobaric surfaces may be drawn to represent surfaces in the upper atmosphere composed of points at the same pressure.
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