RV Air Conditioner 2

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RV Air Conditioner 2

Contact "switch" is a foreign word derived from the English word "switch", originally meaning "switch". When the Chinese technical community introduced this term, it was translated as "exchange". In English, the verb "exchange" and the noun "switch" are the same word (note that "exchange" specifically refers to signal exchange in telecommunications technology, which is not the same concept as item exchange).

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