There are several levels of lava platform in the park, the main ring lava ring platform, ring volcanic cone lava platform and the overflow of lava platform, large area, gentle slope.

公园内有数级熔岩台地，主要有环火山口熔岩台地、环火山锥熔岩台地和裂隙溢出的熔岩台地，面积大、坡度平缓。

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With analysis of structure of cone roller bearing inner ring forgings, corresponding improvement on original forging technology has been put forward.

分析圆锥滚子轴承内圈锻件结构，对原锻造工艺中的不足提出了相应的工艺改进措施。

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The purpose of this paper is to analyses the structure, working principle and common troubles of twin cone lock ring synchronizer and to study the control methods and trouble shooting ways.

对汽车锁环式双锥面同步器的结构、工作原理、常见故障类型进行分析研究，找出发生故障的原因，然后提出解决和控制的方法。

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