This new design series is an expansion from our popular Summer 2009 'PEK' design, a symbol to the internationalization of our capital city of Beijing.

这款设计是在我们2009年夏天pek设计的基础上，又扩展的一个新的设计，象征着我们的首都北京成为国际化都市。

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The compatibility, crystalline structure, transitions and some mechanical properties of PEK-C/PEEK blends were studied by DMS, DSC, X-ray diffraction and Instron.

用挤出方法制备了新型聚芳醚酮（PEK-C）和聚醚醚酮（PEEK）共混物。对共混体系的相容性、转变、结晶结构及力学性能等进行了研究。

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There is also described a polymerization process using the alkali metal salt to yield PEK with high inherent viscosity and improved mechanical and thermal properties.

还描述了一种使用碱金属盐来生产具有高特性粘度和改善的机械和热性能的PEK的聚合方法。

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Investor Appeal Grade: C A big part of the problem with PEK is timing.

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Market Vectors China A shares ETF ( PEK) has slumped 1.77% in the past three months.

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