[ 'indikeitә ]
n. 指示器, 指示剂, 指标
[计] 指示器
n. a signal for attracting attention
n. a device for showing the operating condition of some system
n. (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
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