掌握徒手绘图的技巧。
库斯·埃森是代夫特理工大学的副教授，主讲工业设计工程的徒手绘图能力课程。
Koos Eissen is an associate professor at the Delft University of Technology and teaches freehand drawing classes at the Faculty of Industrial Design Engineering.
原来典型的工业设计就是应用艺术造型设计，它对设计师所要求的主要是材料知识、造型能力、徒手绘图能力、绘画能力和渲染能力。
Classical industrial design is a form of applied art, requiring deep knowledge of forms and materials and skills in sketching, drawing, and rendering.
原来典型的工业设计就是应用艺术造型设计，它对设计师所要求的主要是材料知识、造型能力、徒手绘图能力、绘画能力和渲染能力。
Classical industrial design is a form of applied art, requiring deep knowledge of forms and materials and skills in sketching, drawing, and rendering.
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