研究表明，涡轮泵不对称以及发动机与机架之间连接刚度弱是引起推力偏心和基频固有频率偏低的主要原因。
It is shown that the offset of propulsion force and the lower natural fundamental frequency are caused by asymmetry of turbopump and weakness of connection stiffness between propulsion and frame.
对称每桶辊位置上自由凹外圈滚道，使用户在任何轴偏心或展示。
The symmetrical barrel rollers position themselves freely on the concave outer ring raceway, which compensates for any shaft misalignment or flexing.
这种方法以拉伐尔喷管内非对称流动理论为基础，首先着眼于减少气动偏心，然后考虑效率。
The method, based on the theory of non-symmetric flow in Lavol nozzle, aims first at the Angle of reducing the gas dynamic misalignment, and then at the Angle of efficiency.
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