IRGn.记录间隔
IRabbr.信息检索(=information retrieval)
irreducible subvariety不可约子簇
irrigating water quota灌水定额
irrevesible heat cycle不可逆热循环
irreconcilable enemies势不两立的仇敌
iridium oxide resistor氧化铱电阻器
irradiant compensation光照补偿
irrigational flowmeter灌溉流量计
irrigation requirement灌溉需水量
irrigator washing unit冲洗器洗涤机
irrigation return flow灌溉回水,灌溉退水