Diamond is one kind of limited functional material in the region of mechanics, thermology, optics, chemic and electronics.

众所周知金刚石是一种在机械、热学、光学、化学、电子学等方面具有极限性能的特殊材料。

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Because their primary purpose is not functional, they are only limited in terms of the materials used to make them.

因为它们的主要用途不是功能性的，所以它们只在制造材料方面受到限制。

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Functional requirements Defined by limited number of users.

功能需求由有限数量的用户定义。

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"Changing people from a very limited functional capacity is one of the greatest parts of this technology,"

VOA: standard.2010.01.27

Instead, these challenges are likely being handled by a functional team member feeling the pain of limited technology ... or not being handled at all.

FORBES