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Hydrometer
01
比重計
a device used for measuring the specific gravity of liquids
Example
Car mechanics use a battery hydrometer to accurately determine acid density levels and whether a new battery is needed.
Pool technicians check chlorine solution density with a hydrometer to balance chemical levels for safe swimming.
例
Car mechanics use a battery hydrometer to accurately determine acid density levels and whether a new battery is needed.
Pool technicians check chlorine solution density with a hydrometer to balance chemical levels for safe swimming.
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