Previously Known As以前被称为 Public Key Algorithm公开密钥算法 Protein Kinase A蛋白激酶A Philippine Kendo Association (Philippines)菲律宾剑道协会(菲律宾) Penalty Kick Goals Allowed (soccer)罚点球的进球让(足球) Pi Kappa Alpha (fraternity)圆周率卡巴α(联谊会) Paul Kagan Associates, LTD保罗Kagan伙伴,电话垂询 Professional Karate Academy (Red Bank, New Jersey, USA)专业的空手道学院(红色的银行,美国新泽西州) Professional Karate Association专业的空手道协会 Public Key Authority公开密钥的权威 Pääkirjaston Aikuisten Osasto (Finnish)Pääkirjaston Aikuisten Osasto (Finnish) Pohjois-Karjala (Finland)Pohjois-Karjala(芬兰) Primary Knock-on Atom主要受到原子 Professionally Known As专业众所周知的 Player Killers Anonymous匿名玩家杀手