Python Software Foundation巨蟒软件的基础 phlysulfone聚砜 Projet San FranciscoProjet旧金山 Pakistan Science Foundation巴基斯坦科学的基础 Performance Shaping Factor (nuclear power)成型性能因子(核电) Perennialized Stream FlowPerennialized水流 Priority Solidarity Fund团结基金优先 Point Spread Function点散播函数 Pounds per Square Foot磅/平方英尺 Program Support Facility程序支持设施 Professional Service Firm专业服务公司 Presbyterian Student Fellowship长老会学生奖学金 pound per square foot磅每平方英尺 Posterior Spinal Fusion脊柱融合 Poisson Summation Formula泊松求和公式