2012年1月16日星期一

Invention




An invention is a unique or novel device, method, composition, process or discovery. It may also be an improvement upon, or alternate means, of achieving an existing desired result or function. An invention that is not derived from an existing model or idea, or that achieves a completely unique function, discovery, or result, may be a radical breakthrough. In addition, there is cultural invention, which is an innovative set of useful social behaviors adopted by people and passed on to others

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