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。
Sunk shafting as a kind of old constructing technology is applying widely in deep foundation constructing.
沉井 这一古老的施工工艺，在当今的深基础施工中被广泛应用。
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