n.制圖技術(制圖質量)
His interests ranged everywhere and all his investigations were recorded in the faultless draughtsmanship that makes his surviving notebooks so interesting. 他的興趣包羅萬象，他所有的研究都以完美尤缺的草圖形式記錄了下來，這使得他留下的它記趣味盎然。
