The invention belongs to an automatic toothbrush of mouth or a tooth sanitation field, in particular to an automatic toothbrush driven by tap water.
本发明属于口腔或牙齿卫生领域的自动牙刷，尤其是涉及一种自来水驱动的自动牙刷。
The utility model relates to a chewing type tooth cleaner which belongs to the field of a daily life tool.
本实用新型是一种嘴嚼式牙齿清洁器，涉及日常生活用具领域。
The study on the tooth harmonic emf is one of the publicly interested and unsolved problems in the field of electric machine theory.
齿谐波电势是电机理论中人们感兴趣而尚未解决的一个问题。
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