指示剂

zhǐshìjì

A chemical reagent that can show the existence of a certain chemical compound in a solution or the chemical nature of a solution with the change of its own color, such as litmus and phenolphthalein.

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indicator

【化】 indicator; visual indicator

【医】 inaicator

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indicator

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zhi3 shi4 ji4

indicator

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指示劑|指示剂 [zhǐ shì jì] ► indicator