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feynman

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yuepeiiccas(金币+1, 翻译EPI+1):谢了 2010-05-02 13:11
5.Biodegradation rate first decreases with the increasing of H up to 1.1, then increases with the increasing  H.
6. Wang et al. studied the influence of H on molecular weight of copolymers which contains PBS and poly(L-lactic acid), when R-value is in the narrow range of 0.9 to 1.1 and that the maximum molecular weight was obtained at R-value of 1.0.
8楼2010-04-02 13:42:57
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