The CrossHatch shader is a good example of how a surface shader can be used to pipe information from other nodes, including other material nodes, to a surface via its Shading Group.

交叉阴影着色方式是一个好例子，一个表面的SHADER能用于去如何从其它节点导入信息，包括其它材质节点，经过它自己的材质网络到一个表面。

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Shader nodes implement material looks that you can apply to geometry.

材质节点使材料生效看起来像你涂抹到几何体。

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Thestarting material is a very simple one, using the above textures as input into their corresponding nodes.

起初材质都是非常简单的，将上面的贴图作为输入放入它们相关的节点。

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And as a reminder, hopefully I don't need to remind any of you, but exam 1 is on Wednesday, so rather than our clicker question being on something from last class, which is exam 2 material, let's just make sure everyone remembers some small topic from exam 1 material, which is the idea of angular nodes.

而作为一个提醒--我希望大家都不需要提醒，但是这周三就要进行第一次考试了，因此我们的这个选择题,不是关于上节课内容的，那是第二次考试的内容，这里只是想确认大家都记得,第一次考试所要求的一些小问题，也就是关于角向节点的概念。

麻省理工公开课 - 化学原理课程节选