PACl聚合铝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)pachymucosa alba[医] 白色粘膜肥厚Pachygone sinican.粉绿藤pacing threshold起搏阈值pachydermatocele神经瘤性象皮病pachycephalosaur肿头龙PAC dosing point投炭点pacing parameter定步参数Pacing the floor踱步Pacui bunyavirus帕斯尤本扬病毒pachimottan asan前屈法