Second, for layer crystals the Grüneisen parameter along the plane may be negative for some temperatures because of vibration film effects, but for other crystals is positive always.

对层状晶体，由于振动的膜效应，使得沿平面层方向的格林乃森参量在某些温度范围内出现负值，而一般晶体的格林乃森参量总为正值。

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This article analyses the influence of the support of oil film vibration damping of the main spindle on cutting degree of roughness through cutting test.

本文通过粗糙度切削试验，分析讨论了车床主轴油膜减振支承对其加工粗糙度的影响。

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The formation of fluid dynamic force and the occurrence of self-excited vibration and oil film vortex of rotor system are analyzed.

分析了转子轴承系统中流体动态力的形成和自激振动的产生与油膜涡动、油膜振荡的故障。

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