hydrometer

名词 hydrometer:

1. a measuring instrument for determining the specific gravity of a liquid or solid
   同义词：gravimeter

hy.drom.e.ter

n.（名词）
An instrument used to determine specific gravity, especially a sealed, graduated tube, weighted at one end, that sinks in a fluid to a depth used as a measure of the fluid`s specific gravity.
液体比重计：一种用来测量比重的仪器，特别是封口的量杯，一端有重量，将其下沉到一定深度，这个深度用来确定液体的比重

【引伸】
hy.dromet.ric
hy.dromet.rically
adv.（副词）
hydrom.etry
n.（名词）