IRB=industrial reference black 工业基准黑IRabbr.信息检索(=information retrieval)irrigating sharp scoop冲洗用锐匙irreligious communists不信仰宗教的共产主义者iridium sodium chloride氯化铱钠,氯铱酸钠irrigation water volume灌溉水量irreplaceable resources不能替代的资源irrigation prescription灌溉处方irreducible polynomials不可约多项式irrigation ditch outlet灌渠出水口irrigating dressing box冲洗敷料盒Irradiance respensivity照度响应度