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

现在,如果你用氟的所有四个氢, 它就会成四氟

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