Cn.字母Cc.prep.<拉> 大约=circaCZSi直拉硅CPSS=Common Program Support System 通用程序支援系统CPAA=Charged Particle Activation Analysis 带电粒子活化分析CPFR联合计划CPRECouncil for the Preservation of Rural England 英格兰农村保护委员会；认证需求工程师（=Certified Professional for Requirements Engineering）CPHD肺原性心脏病CQMA全国质量奖CPIBClofibralCPTU孔压静力触探

C.Z.abbr.=Canal Zone；Canal Zone