Their products became perfect scale models.

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The scale of the whole piazza is perfect: warm stimulation and welcome relaxation in equal measure.

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Sally Singer, fashion news editor of Vogue, says that her collections have been well received among retailers, now is the perfect time for Wenlan to do a show on this scale.

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"Theoretically if you construct the elements we've made at terahertz frequencies, make them even smaller and then scale them up to optical frequencies, you could have perfect lensing at those frequencies, " said co-author Dr Willie Padilla of the University of California, San Diego.

BBC: Last Updated: Monday, 8 March 2004, 09:03 GMT

PC's architecture was not perfect, but its adoption as an industry standard made possible economies of scale in both hardware and software.

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The result, as they recently reported in Biomacromolecules, is that they can spin bovine serum albumin into long, even fibres that are perfect for creating both suture threads and thick mats similar to conventional wound dressings, but on a small scale.

ECONOMIST: Monitor