This paper analyzes the structure of the primary suspension with chevron rubber spring to find out the critical dimensions which may influence the height of bogie frame.

对采用人字形弹簧的一系悬挂进行结构分析，找出一系悬挂中影响构架高度的几个关键尺寸。

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As a result, it is found out that the self-steering bogies can reduce horizontal stiffness of primary suspension to as small as half of conventional bogies keeping the same running stability.

研究结果表明，在自导向转向架一系悬挂水平定位刚度降为普通转向架对应刚度一半的情况下，仍能保证同样水平的车辆运行稳定性。

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Suspension stability is the primary factor to prepare integrated membrane without defect.

稳定的制膜液是制备出完整、无缺陷溶胶膜的首要条件。

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