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/topic/332883/Vacuum-cleaner-functions-and-principles-knowledge-of-vacuum-cleaner-functions-and-principles/
carpet cleaner electric mop washing machine

Vacuum cleaner functions and principles—knowledge of vacuum cleaner functions and principles

Relying on suction to find tiny objects: In many cases, people will inevitably drop some very tiny objects, such as buttons, pills, bottle corks, sewing needles...

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