This paper provides a hierarchical semantic model for the design of complex products based on existing 3D CAD software.

针对复杂产品的设计建模提出了一个层次语义模型。

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However, measurement system can not link with 3d CAD system directly because the measured dense scattered data can not be processed effectively by 3d CAD software.

然而测量系统和三维CAD系统之间无法直接结合，因为测量得到的数据是海量散乱点，三维CAD无法对之进行高效处理。

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Proficiency in office software, some experience on 3d CAD.

熟练操作办公软件，有3 D CAD操作经验。

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Currently, around 30, 000 professional 3D printers are installed around the world, while around 10 million people actively use 3D CAD software.

ENGADGET: FORM 1 delivers high-end 3D printing for an affordable price, meets Kickstarter goal in 1 day

Thankfully, printing out complicated objects doesn't require a mastery of CAD or other complex 3D modeling software.

ENGADGET: MakerBot Replicator impressions: the dawning of 3D printers in every home?

The easy-to-use Form software (compatible with any 3D CAD package), custom-formulated printing materials, and Form Finish post-processing kit complement the beautifully simple printer to make desktop 3D printing as easy as pushing a button.

ENGADGET: FORM 1 delivers high-end 3D printing for an affordable price, meets Kickstarter goal in 1 day