This is a D letter set into a pattern, which is embedded within a modified line-art 要約 アート 作成します。 D パターン
Science and education vector footage of chemistry equipment. Images of books with blank covers in different colors and a silver flask with bubbling liquid inside. Free vector graphics for your science, chemistry, education, laboratories, experiments, research, school and knowledge visuals ガラス バブル 科学 化学の本のレイアウト