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The catalysts used to hydrogenate polymer containing polydiolefin units are introduced in this paper.The mechanism of SBS hydrogenation and the development of the kinetics are also referred to.

介绍了目前用于含聚双烯烃聚合物氢催种类，讨论了SBS氢机理及氢动力学研究进展。

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3G, 401(K), a,

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原声例句
FLLL2 Level 2 语法课本

The middle link should be yellow or white.

中间链节应为黄色或白色。

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Who was this man who held in his finger these curiously variegated links of an unknown chain?

手指上拿着一条未知链条的些奇特的杂色链节的人是谁？

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fascistic, fascistize, fascitis, fasculation, faserserpentine, fash, fasherati, fashion, fashion designer, fashion model,

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