Arrl[电] American RadioRelay LeagueARRabbr.飞机无线电规程(=Aircraft Radio Regulations)arrears in contribution拖欠款项； 拖欠会费arrears of project fund工程款拖欠arrhythmogenic mechanism心律失常机制arranging and cataloging整理编目Arranging train routines进路排列arrhythmia alarm message心律不齐报警信息arrector muscles of hair立毛肌arraignment of defendant[法] 传唤被告, 提审被告Arruga's capsule forcepsarranging - needle form布针形式