作者: Ruey-Shyang You , Xin Zhao , Zu-Pei He , Bin-Gang Duan
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摘要: An electronic book reading device includes a housing, an airflow sensor and controller. The turbine, shaft fixed to the turbine tachometer. is configured for sensing rotating with about shaft. tachometer connected detecting rotation speed of turbine. controller determining whether detected falls in predetermined range, controlling execute operation if range.