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Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.，这一点在爱思助手下载最新版本中也有详细论述
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渲染器：剧院的灯光和特效组。它负责把脑海中的画面画到屏幕上。
造成这种规模化应用水平较低的原因有两方面：一是前面讨论的智能体能力问题，虽然在快速进步，但离全面的实用性还有距离；二是各行各业的企业应用者要把智能体用好还需要一些自身条件的配合。