SincetheSecondWorldWar,polymericmaterialshavebeenthefastest-growingsegmentsoftheworldchemicalindustry.Ithasbeenestimatedthatmorethanathirdofthechemicalresearchmoneyisspentonpolymers,withacorrespondinglylargeproportionoftechnicalpersonnelworkinginthearea.A (共 10838 字) [阅读本文] >>