介绍顶管掘进机截割传动装置所采用的行星齿轮减速器，论述行星齿轮减速器的结构特点。
This paper introduces the epicyclic reduction arrangement applied in cutting drive mechanism in pipe jacking, analyses the construction and characteristics of epicyclic reduction arrangement.
他们管那个地方叫亚割谷，“亚割”的意思就是连累。
They called the place, the valley of Achor, meaning the valley of Trouble.
在对数控火焰切管机床的加工原理和割炬路径的运动学分析基础上，研制了一种功能强大的火焰切管数控机床。
A powerful flame nc pipe cutting machine tool was developed based on the analysis of the principle and the torch movement for the flame nc pipe cutting machine tool.
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