Theorical and experimental investigation on programmable cam mechanism are conducted in this dissertation.
论文以可控凸轮机构为研究对象，进行了理论和实验研究。
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Firstly, the pigment prepared by presynthesized tin sphene was obtained and has a good colour development. Theorical evidence was found by coprecipitation method.
In the book Course of Theorical Mechanics by Yanbai Zhou there are some mistakes about the expression of acceleration in arc coordinates, this paper has corrected them.