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