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单词 earth spring
释义

Definition of earth spring in English:

earth spring

noun
  • In electrical equipment: a spring with an earth connection.

Origin

Mid 19th century.

Definition of earth spring in US English:

earth spring

noun
  • In electrical equipment: a spring with an earth connection.

Origin

Mid 19th century.

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更新时间:2024/10/19 15:30:23