Working principles: Tool using a self-centering theory, generated through the mandrel roller adjustment hitting, rolling motion.
工作原理：工具采用自定心原理，通过芯轴调节滚柱产生击打、滚压运动。
Working principles: Tool using a self-centering theory, generated through the mandrel roller adjustment hitting, rolling motion.
工作原理：工具采用自定心原理，通过芯轴调节滚柱产生击打、滚压运动。
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