A general model is developed to analyze drill string vibration considering the coupled relations between longitudinal vibration, lateral vibration, and twisting vibration.
考虑钻柱的纵向振动、横向振动及扭转振动之间的耦合关系，建立了钻柱振动分析的综合模型。
The previous study for coupled lateral and torsional vibration of turbogenerator rotor and shaft system is reviewed and purpose for further study is provided.
总结了近年来国内外对汽轮发电机组转子及轴系弯扭耦合振动问题的研究进展和成果，并对其进一步研究进行了展望。
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