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)Paclitaxel liposomes紫杉醇微泡Pachyderma of larynx喉厚皮症pachyleptomeningitis[医] 硬柔脑[脊]膜炎Pachytriton labiatusn.无斑肥螈pachytene chromosome粗线期染色体Pacchionian foramina[医] 帕基奥尼氏孔, (小脑)幕切迹Paclitaxel injection紫杉醇注射液Pachysoeca massartiin.厚囊藻Pachystoma pubescensn.粉口兰pachydermia laryngis喉厚皮病