In die manufacture, grinding defects such as surface burning, grinding cracks, grinding trace and grinding stress affect the serve life of dies.

模具制造过程中，磨削加工造成工件表面烧伤、磨削裂纹、磨削痕及磨削应力等缺陷，直接影响模具的使用寿命。

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To increase component of grinding force ratio can increase principal stress extreme values in grinding stress field. Materials can be removed by brittle fracture.

粗加工中，增加磨削分力比可以增大磨削应力场中的主应力极值，有助于材料的脆性去除。

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We all know that slacking off on dental hygiene is the first way to get cavities, but stress can also be a culprit, say experts, especially when you’re grinding your teeth at night or during the day.

我们都知道对牙齿保健的懈怠是诱发龋齿的第一因素，但专家称压力也可能导致龋齿，尤其是当你晚上或白天磨牙时。

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Finally, treating and preventing stress or anxiety through counseling, relaxation, exercise, meditation, hypnotherapy or any number of other stress-relief methods may help eliminate teeth grinding as well.

CNN: What can I do about teeth grinding?

The exact cause of teeth grinding is not known, but the most likely culprits are things like stress, sleep disorders, crooked or missing teeth and having an abnormal bite, where the upper and lower teeth do not come together normally (known as malocclusion).

CNN: What can I do about teeth grinding?