Thought that the generator rotational speed had achieved nearby two time of critical rotation speeds, the shafting has had the oil film vibration.

认为发电机转速达到两倍临界转速附近，轴系发生了油膜振荡。

youdao

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。

youdao

Through frequency spectrum analysis, the causes of sudden vibration of the unit are found out, and confirm that has the feature of oil film vibration, and then is eliminated.

对机组突发性振动的成因进行了频谱分析，确认油膜振荡的振动特征并加以消除。

youdao