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An instrument for determining elevation especially an aneroid barometer used in aircraft that senses pressure changes accompanying changes in altitude . 測高儀，高度計一種測量高度的儀器，尤指飛機中的無液氣壓表，其可以測出伴隨高度變化的壓力變化。
An instrument for determining elevation, especially an aneroid barometer used in aircraft that senses pressure changes accompanying changes in altitude. 測高儀，高度計一種測量高度的儀器，尤指飛機中的無。