On this foundation, a theoretical model based on system method for calculating coupled axial and torsional vibration of large ships diesel propulsion shafting is established.

系统阐述了大型船舶柴油机推进轴系振动的特点和规律，在此基础上建立了轴系纵扭耦合振动的系统矩阵理论计算模型。

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In this paper, a theoretical model based on system matrix method for calculating coupled axial and torsional vibration of large Marine diesel propulsion shafting is established.

本文建立了大型船舶柴油机推进轴系纵扭耦合振动计算的系统矩阵模型。

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Propulsion is made of two high performance diesel engines, to provide power and fuel efficiency.

推进由两个高性能柴油发动机，提供电力和燃油效率。

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It has a crew of 20 plus 24 scientists, and features a special hull that diverts bubbles that interfere with sonar operations, and a high-efficiency diesel-electric propulsion system.

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In this incarnation, the 2-seater would use electric propulsion around town then fire up its twin-turbo V6 diesel to push to peak speeds and extended range.

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