目的：获取标准牙冠的表面数据。
Objective: To acquire the data of the surfaces of standard teeth crowns.
产品表面数据是计算机辅助应用的重要前提，研究了基于表面数据点集的产品CAM方法。
Surface data points are important for realizing products' computer-aided applications. CAM methods based on surface data point set are researched in this paper.
如果该文件包含表面数据区，则那些表面数据区被滤出，且文件签名是基于所接收文件的剩余部分生成的。
If the file includes superficial data areas, those superficial data areas are filtered out and a file signature is generated based on the remaining portions of the received file.
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