Pernu佩尔努perprep.每；每一；经过；按照perihypoglossal nucleus舌下神经周围核Perinatal fetus outcome围生儿结局periscopic concave lens周视凹透镜perinucleolar chromatin核仁外周染色质, 核仁周围染色质peri-operative period围术期Percutaneous dilatation经皮扩张Pereutaneous absorption透皮吸收peroxodiphosphoric acid过磷酸, 过二磷酸perforation penetration射孔穿深per annum interest rate年利率,年息率