a hanger shaft is arranged between a travel wheel of the jackstay machine and a supporting wheel system so as to lead the travel wheel to be hinged with the supporting wheel system.
支索器
轮和支轮系统间增设吊轴，
轮和支轮系统变
铰接。
a hanger shaft is arranged between a travel wheel of the jackstay machine and a supporting wheel system so as to lead the travel wheel to be hinged with the supporting wheel system.
支索器轮和支轮系统间增设吊轴，轮和支轮系统变铰接。
声明：以上例
、词
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