There is some level of residual stress left after one mastication period.

一个咀嚼周期结束时，牙周膜有残余应力存在。

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Mastication is one of the most important fundamental oral functions.

咀嚼是口腔重要的生理功能之一。

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Mastication is one of the most important fundamental oral functions.

咀嚼是口腔重要的生理功能之一。

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