Aiming at the motion equation of underwater vehicle, a hydrodynamic coefficient sensitivity index is introduced.

针对水下航行器操纵运动方程，引入水动力系数敏感性指数的概念。

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A new concept, characteristic coefficient sensitivity, is introduced. The relationship between it and eigenvalue sensitivity is also given.

本文提出了系统特征系数灵敏度的概念，导出了特征系数灵敏度与特征值灵敏度间的关系。

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Sensitivity coefficient calculation is the key point of uncertainty evaluations.

灵敏系数的计算是不确定度计算的关键。

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