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weak damping
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  弱阻尼
    The result shows that different propeller blads number does not obviously effect the critical speed and transverse vibration’s spectrum of the weak damping shafting.
    结果表明:螺旋桨叶数的不同对弱阻尼轴系横振的共振转速及横振响应的频谱特性影响不大;
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  “weak damping”译为未确定词的双语例句
    Experimental Research on Effects of Different Propeller Blade Number on Transverse Vibration of Weak Damping Shafting
    不同桨叶数螺旋桨对弱阻尼轴系横向振动影响的实验研究
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  weak damping
Moreover the damping is assumed to be nonlinear with no growth assumption at the origin, which allows very weak damping.
      
For nor linear inertial torsion vibrations of the structure of a nematic liquid crystal in a destabilizing magnetic field, there exist low-frequency modes with anomalously weak damping.
      
When the piston velocity is always smaller than the thermal velocity we observe weak damping.
      
We investigate the microscopic mechanisms associated with strong and weak damping in the adiabatic motion of the simple piston with finite mass and finite amount of gas.
      
Strong and Weak Damping in the Adiabatic Motion of the Simple Piston
      
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In the paper an experimental research on shafting transverse vibration is proceeded on a test shafting by using three-blade and four-blade propellers. The result shows that different propeller blads number does not obviously effect the critical speed and transverse vibration’s spectrum of the weak damping shafting.The measurements also show that transverse vibration is a periodical vibration that contains multiple sinusoidal components with rotating frequency as ultimate frequency, and has large component...

In the paper an experimental research on shafting transverse vibration is proceeded on a test shafting by using three-blade and four-blade propellers. The result shows that different propeller blads number does not obviously effect the critical speed and transverse vibration’s spectrum of the weak damping shafting.The measurements also show that transverse vibration is a periodical vibration that contains multiple sinusoidal components with rotating frequency as ultimate frequency, and has large component at the first critical frequency. Under lower rotating speed the transverse vibration consists largely of components at ultimate frequency and first critical frequency, while under higher rotating speed components at double ultimate frequency and triple ultimate frequency should be taken into consideration besides.

在船舶轴系实验台上,对分别采用3叶桨、4叶桨情况下轴系横向振动进行了实验研究。结果表明:螺旋桨叶数的不同对弱阻尼轴系横振的共振转速及横振响应的频谱特性影响不大;稳定运转中,弱阻尼轴系横振的基本特点是以轴频为基频的周期性振动,并且还有较强的一阶横振固有频率分量。在低转速下轴系横振以轴频分量和一阶横振固有频率分量为主,在较高转速下还需考虑2倍轴频、3倍轴频分量。

 
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