| 释义 |
Fahrenheit's hydrometer Fahrenheit's hydrometer[′far·ən‚hīts hī′dräm·əd·ər] (engineering) A type of hydrometer which carries a pan at its upper end in which weights are placed; the relative density of a liquid is measured by determining the weights necessary to sink the instrument to a fixed mark, first in water and then in the liquid being studied. |