The results show that the cracks on the sealing labyrinth are heat-fatigue cracked resulted by the temperature field around the third tooth of the sealing labyrinth.
结果表明，封严篦齿上的裂纹为热疲劳裂纹，裂纹的形成主要与第三封严篦齿附近的温度场有关。
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。
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