HYDM stands for various terms. Discover the full forms, meanings, and possible interpretations of HYDM across different fields and industries.
A float device used to measure the specific gravity of battery electrolyte to determine its state of change. Floating instrument used to measure specific gravity of a liquid. An instrument for determining the specific gravity or the API gravity of a liquid. A float type instrument used to determine the stateofcharge of a battery by measuring the specific gravity of the battery electrolyte.
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