“General theory of practical method” Online Video Trailer

by Shopmaster on 2013/10/28

General theory of practical method: door hinge and the vertical axis. Lever and the pivoting point.  Presenter: Chen Zhonghua   Length: 17 min.   In: English   Year: 2013  Difficulty:1/5  At: Oakland, CA. USA

General theory of practical method
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{ 2 comments… read them below or add one }

bruce.schaub October 29, 2013 at 3:10 pm

Thank you Master Chen. Very helpful.

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allenjoshua7000 June 12, 2017 at 2:12 pm

Thank you!

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