PRM=Personal Radiation Monitor 人体辐射检测器PRabbr.(=public relation) 公共关系praseodymium bromide溴化镨Prandtl-Meyer flow普朗特-迈耶流动praxi-therapeutics工疗运动疗法prapanedid phenylate丙二醇苯醚przhevalski rs horse普氏野马, 蒙古野马praseodymium-doped掺杂错prapaganda education宣传教育Przewalski's gazellepralidoxime mesylate[化] 甲磺酸磷定praseodymium sulfate硫酸镨