第二章主要介绍了预备知识和本文模型的基本假设。
The second chapter mainly introduces the prearrangement knowledge and the basic hypothesis of the model.
常规牙体预备，取模，超硬石膏灌制工作模型。
Regular teeth and ready, take modulus, superhard gesso cut working model.
提出了发电系统停运容量预备表的概念，并据此给出了先形成发电系统停运容量预备表，再建立发电系统停运容量模型的实用算法。
A new concept, the generation system outage capacity probationary model, is presented. Based on this concept, a practical algorithm for building generation system outage capacity model is proposed.
该方法首先利用三维激光测量仪对牙预备体模型进行数据测量；
Firstly, the data on preparation teeth was retrieved by the 3D-optical measuring system.
结果 基于牙冠预备体三维数字化模型，得到了就位倒凹的量化指标。
Results By point clouds analysis, the quantitative parameter of undercut was obtained.
结果 基于牙冠预备体三维数字化模型，得到了就位倒凹的量化指标。
Results By point clouds analysis, the quantitative parameter of undercut was obtained.
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