PS =Pacific Southwest Airlines 太平洋西南航空公司[美]; Passenger Steamer客轮; Performance Standard 性能标准; PermanentSecretary 常务次官[英]; Pharmaceutical Society of Great Britain 英国药学会; Philological Society 语言学会[英]; Physical Sciences 物理科学; Picket ship (雷达)哨舰; Planning Study 计划研究; Plastic Surgery 整形外科; Point of Switch 转辙器尖; Polarized Sounder 极化音响器; Polystyrene 聚苯乙烯; Power Supply 电源; Press Secretary 新闻秘书; Pressure Switch 压力开关; Prestress预应力; Process Specification操作说明书; Process Sto-rage 操作[工作]存贮器; Procurement Specification 采购说明书; Product Standard 产品标准([美] NBS); Programming System 程序设计系统; Propellant Supply 推进剂供应; Proton Synchrotron 质子同步加速器; Public Safty公共安全; Public Service 公共事业; Pull Switch 拉线开关; Pulse Shaper 脉冲形成器; 脉冲形成电路