polycrystallineWiktionary 原文英美构词拆解polypoly-前缀crystallinecrystalline词干poly-many · polymer词源说明From poly- + crystalline.释义形容词adjective1Composed of an aggregate of very small crystals in random orientations同族词派生词 2nanopolycrystalline·polycrystalline silicon相关词 1polycrystal