para-aminohippuric acid对氨基马尿酸 primary afferent hyperpolarization初级传入神经超极化 pulmonary artery hypertension肺动脉高压 pulmonary artery hypotension肺动脉低压 polycylic aromatic hydrocarbons多环芳香烃 para-aminohippurate(a salt of paraamlnohippuric acid)对氨基马尿酸盐 ρ-aminohippuric acid