单词 | millimeter of mercury |
释义 | millimeter of mercury [`mil·ǝ´mēd·ǝr ǝv `mǝr·kyǝ·rē] MECHANICS A unit of pressure, equal to the pressure exerted by a column of mercury 1 millimeter high with a density of 13.5951 grams per cubic centimeter under the standard acceleration of gravity; equal to 133.322387415 pascals; it differs from the torr by less than 1 part in 7,000,000. Abbreviated mmHg. Also known as millihg. |
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