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The author of literature (Prog. Polym. Sci. 26 (2001) 3-65) said:' poly(tetrafluoroethylene) and some of its derivatives exhibit the lowest known dielectric constants with values of e between 1.9...
08 December 2017 6,195 5 View
I'm studying the phase transition of crystal induced by tensile stress. There are two crystalline phases, with high and low symmetries respectively. Is it easier for the transition from phase...
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