indicators指示器indicatorn.指示器；指示剂；指示牌；【统计学】指标；【计】指示符indicator of utilization of machine-hour台时利用程度指标indicator system of performance measurement绩效评估指标indicator system of sustainable development可持续发展指标体系indicator organism for atmospheric pollution大气污染指示生物indicator paper -reflecting apparatus method试纸-反射仪法indicator for non-aqueous acid-base titration非水酸碱滴定指示剂Indicator for electrical transmission tachometer.标准英文名： Aircraft equipment.