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.
由于边拱具有不对称性，因此浇注边拱混凝土时现浇支架将承受巨大的水平推力。
Because of asymmetry of side arch, the support for casting will bear tremendous horizontal thrust when placing side arch concrete.
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