Matter element system model of products, soft-hard model of products and structure model of products are given, which are propitious to representation in computer.

文章提出利于计算机表示的产品物元系统模型、产品软硬模型、产品结构模型。

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And I can be that standing in my own faith because really what you become is an example, a model of an engaged faithful person who is now working so hard to bring people different religion traditions together."

我能坚持自己的信仰,因为你成为的那个人是,一个有信仰的人，他正在致力于,使不同的宗教传统融合“

普林斯顿公开课 - 人性课程节选

The patchy credit histories of subprime and low-documentation borrowers made it hard to model default rates accurately.

ECONOMIST: Rebuilding the banks

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FORBES: Magazine Article

"I think that fact alone will make the Amazon model hard to clone, " says Bill Gurley, a partner with Hummer Winblad Venture Partners.

FORBES: Does Amazon.com really matter?