我国对螺旋锥齿轮加工的研究仍集中在“格里森”机床方面。
Researchers still put their emphasis on studying Gleason machine tools in our country.
而螺旋锥齿轮加工质量的控制一直是其加工中的一个关键问题。
But the quality control of spiral bevel gear processing has been the key problem in the processing.
这些公司对外均进行技术保密，外界很难获得螺旋锥齿轮的加工技术。
They keep their technique secret and others hardly acquire the machining technology about spiral bevel gears.
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