Structure, mechanics, electricity, calorifics, radialization and chemicalproperties are reviewed for polyperfluoroethylene-propylene and tetrafluoroethylene perfluoroalkyl vinyl ether copolymer.
As sediment particles in suspension,snails(oncomelania hupensis)are transported in riversand canals,however,their transportaiton mechanism is a complex process of mechanics.
The composites with interpenetrating networks have good structure homogeneous and performance; also their mechanics, calorifics and tribology arc excellent.
One kind of inverse eigenvalue problems, whose solutions are required to be normal or diagonalizable matrices, is investigated in quaternionic quantum mechanics.