hydrometer

A scientific instrument used to measure the specific gravity or density of a liquid or solid.

• 🇨🇳用于测量液体或固体比重或密度的科学仪器。

1. Measurement device B2 formal scientific

   An instrument used to measure the density or specific gravity of a liquid (or, less commonly, a solid) relative to water.

   • The winemaker used a hydrometer to check the sugar content of the grape juice.
   • A hydrometer floats in the liquid, and the reading on its stem indicates the specific gravity.
   • Technicians at the laboratory calibrated the hydrometer before each test.
   • The hydrometer showed that the battery acid had a specific gravity of 1.28.

   🇨🇳测量仪器

   同义词: densimeter

• hydrometers plural form
• hydrometers' possessive plural form
• hydrometer's possessive singular form