3Dプリンタで作る階差機関 / Build Difference Engine by 3D Printer

B5582ce2d9959dfcff0384a07003e188?s=47 mackee
August 05, 2017

3Dプリンタで作る階差機関 / Build Difference Engine by 3D Printer

builderscon 2017 #builderscon #buildersconD

B5582ce2d9959dfcff0384a07003e188?s=128

mackee

August 05, 2017
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