首页 / 官方藏书 / The Economy of Workshop Manipulation / A logical method of learning constructive mechanics. Arranged with questions for the use of apprentice engineers and students. / CHAPTER XXXIX. DESIGNING MACHINES.

CHAPTER XXXIX. DESIGNING MACHINES.

The Economy of Workshop Manipulation / A logical method of learning constructive mechanics. Arranged with questions for the use of apprentice engineers and students. · John Richards · 第 13 / 18 章