目的要求：
1、深入理解聚形的概念；
2、深入理解单形相聚原则及属于同一单形的晶面的特点；
3、掌握从聚形中分析单形的方法与要求。
步骤：
1、确定晶体的对称型、晶系和晶族，并对晶体进行定向；
2、根据等大同形的晶面逐一确定出单形的数目、单形符号，确定所有单形的名称。
模型号码：7035
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模型号码：6014
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模型号码：5042
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