The rings (for materials see Table 6.1) are heat-treated in different ways according to the strain on the gear rings and the contact pressure of the area carrying the highest load.
戒指(材料见表6.1)的热以不同的方式处理根据齿轮上的戒指，在载有最高负荷区接触压力的压力。
Uses the twin mast column type structure, the load-carrying capacity is big, the platform area is big, the stability is extremely good, the revolution is flexible, carrying out is convenient.
采用双桅柱式结构，载重量大，平台面积大，稳定性极好，运转灵活，推行方便。
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