PACXn.专用自动计算机交换机PACabbr.太平洋的(=Pacific)abbr.无人驾驶飞机(=Pilotless Aircraft)abbr.政治行动委员会(=political action committee)pachyvaginalitis肥厚性睾丸鞘膜炎paclitaxel/TU紫杉酚／治疗应用Pacing algorithms起搏程序pachyderma oralis口腔厚皮病Pachyapppa populin.杨粗毛绵蚜Pachyptila turturn.鲸鸟(水薙鸟科)pachymeningopathy硬脑膜病Pachuca extractor[化] 气升管搅拌浸取器Pacini's solutionPachyta bicuneatan.双斑厚花天牛