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Structure, mechanics, electricity, calorifics, radialization and chemicalproperties are reviewed for polyperfluoroethylene-propylene and tetrafluoroethylene perfluoroalkyl vinyl ether copolymer.

分别阐述了聚全氟四氟全氟代醚共聚物的结构力学热学、辐射、化学性能。

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3G, 401(K), a,

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Now if you change all four of the hydrogens on the base ethylene with fluorine it becomes tetrafluoroethylene.

现在,如果你用氟改上的所有四个氢, 它就会成四氟

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gathered, gatherer, gatherer-stitcher, gathering, gathering-arm, gatherround, gathers, gather-write, Gatineau, gating,

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3G, 401(K), a,
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