sand battery

名词 n.

英文释义

名词 n.
  1. An unspillable electrochemical battery whose cells use electrolyte soaked sand – typically used to test telegraph cables at sea. historical
  2. A sand fort equipped with an artillery battery, frequently found in coastal defense, usually having organic infantry attached. historical
  3. A thermal storage battery which uses sand as the storage medium.

词形变化

sand batteries plural
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