(略) 结构多糖甲壳素、 外骨骼的节肢动物 (蜘蛛、 甲壳类动物、 昆虫等) 与真菌的细胞壁的主要组成部分的结构。它是类似,纤维素,但具有不同侧面组对 2 碳的葡萄糖。可这种材料可吸收的手术线程。显示只潜力无穷聚合物的一个小片段。在绘制的它。 甲壳素 多糖 糖 甲壳素
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Free Stimorol vector logo graphics. Stimorol was founded in 1915 in Denmark by Holger Sørensen. The company manufactures chewing gum. Stimorol is one the biggest chewing gum brands in the world. The company was bought by Cadbury-Schweppes in 2002. Rate your favorite brand logos 食品 口香糖 吉百利施韦普斯 公司
Cacao, or cocoa plant. Source: http://commons.wikimedia.org/wiki/File:Cacao2_(PSF).jpg Info: http://en.wikipedia.org/wiki/Cacao and http://en.wikipedia.org/wiki/Cocoa 生物学 植物学 食品 可可
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 玻璃 泡沫 科学 化学书布局
Science and research vector footage of chemistry equipment. Images of transparent glass vessels with different shapes, brightly colored liquids inside, flask on a tall metal stand, retort for distillation and a molecule model. Free vectors for your chemistry, experiments and reactions visuals 科学 液体 设备 化学图形集
Colorful and shiny vector illustration of a lollipop. Sweet treat in many different bright colors, shines and reflections on the candy. Fun tasty vector illustration for all candy, lollipop, food, company logo, application icon, sticker, candy shop, T-shirt print or festive design projects 徽标 食品 多彩 糖果图标
Spreader- Instrument to spread the bacterial culture on plates containing growth media 层流 摊铺机 细菌 吊具微生物学
The abbreviated structure of the storage polysaccharide starch; just a short segment shown (starch is a long, potentially infinite, polymer of alpha-glucose molecules). Unbranched starch, like the one drawn here, is called amylose. Drawn in Inkscape 生物学 化学 食品 淀粉
A ball-and-stick model structure of acidic (negatively-charged) amino acid glutamic acid (Glu, E). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape 酸 酸性 氨基 谷氨酸 (氨基酸)
A ball-and-stick model structure of polar amino acid asparagine (Asn, N). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape 酸 氨基 氨基酸 天冬酰胺 (氨基酸)
Free DuPont vector logo saved as AI and EPS formats. DuPont is an American science-based products and services corporation serving a wide range of markets such as nutrition, safety, agriculture, electronics, building and construction, transportation, communications and apparel 食品 科学 建设 杜邦公司