God, what a swine Bertrand is.我的老天, 伯特兰德简直讨厌死了.The transmission of normal circular - arc gear is a typical Bertrand conjugation.考虑到平行轴的法向圆弧齿轮传动已臻成熟,论文重点研究了相交轴与交错轴条件下法向圆弧齿轮传动的基本方案.Mr Zhang Songnian once translated an essa...
You can get kits to do this from DIY stores.你可以在自己动手商店里买一套工具自己来做这个。There were a couple of decent kits knocking around, but this wasn't one of them!这里有几套像样的装备,但这套不是！Her popular pot holder is also available in do-it-y...