| 单词 | specific gravity |
| 释义 | specific gravity [spǝ`sif·ik `grav·ǝd·ē] MECHANICS The ratio of the density of a material to the density of some standard material, such as water at a specified temperature, for example, 4°C or 60°F, or (for gases) air at standard conditions of pressure and temperature. Abbreviated sp gr. Also known as relative density. |
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