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)pachystachyus粗穗状花序的pachymeninges[医] 硬脑[脊]膜Pacnibacillus类芽孢杆菌pachyrrhizine沙葛内酯Pacol process帕科尔法paclobatrazol多效唑pachymic acid茯苓酸Pachysamine B粉蕊黄杨胺B, 帕其沙明BPaciorkiewicz帕乔尔凯维奇pacing rhythm起搏节律,起搏心律