Perin依地酸钙哌嗪perprep.每；每一；经过；按照perphosphoric lime过磷酸石灰perforated-panel穿孔板perioscopic convex周视凸面Pericallis hybridan.瓜叶菊perphosphoric acid过二磷酸perforation effect射孔效能periglacial region冰缘区域Pericardial recess心包隐窝perforation system穿孔系统perfluoropolyethern.全氟聚醚；聚全氟醚