比重计 Hydrometer
（重定向自Alcoholimeter）
比重计是用来测量液体的比重的装置。
比重计通常用玻璃制作，上部是细长的玻璃管，玻璃管上标有刻度，下部较粗，里面放了汞或铅等重物，使它能够竖直地漂浮在水面上。测量时，将待测液体倒入一个较高的容器，再将比重计放入液体中。比重计下沉到一定高度后呈漂浮状态。在此时的液面的位置在玻璃管上所对应的刻度就是该液体的比重。
alcoholimeter
英汉-汉英词典
醇定量器
词组 | 习惯用语
您要查找的是不是：
- alcoholism n. 酒精中毒
- catecholamine n. [生化]儿茶酚胺
- calorimeter n. 量热计
- colorimeter n. 色度计；比色计
alcoholimeter n. 醇定量器，酒精比重计
网络短语:
alcoholmeter alcoholimeter alcoholometer 酒精计
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英语百科
Hydrometer 比重计
（重定向自Alcoholimeter）
A hydrometer is an instrument that measures the specific gravity (relative density) of liquids—the ratio of the density of the liquid to the density of water.
A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to specific gravity. Hydrometers usually contain a scale inside the stem, so that the person using it can read specific gravity. A variety of scales exist for different contexts.
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