There are three kinds of health indicators: state-based, collection state-based and threshhold-base indicators.

健康指示器有三个种类：基于状态的、基于集合状态的和基于阈值的。

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The pH response to temperature varied in different pH ranges of the aqueous solutions, and colors changed when acid-base indicators were added to the aqueous solution.

在一定酸碱性的甘氨酸溶液中加入适当的酸碱指示剂，可以实现颜色随溶液温度的变化而变化。

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Third, it establishes a set of indicators in order to calculate national RN, which provides the base of comparatively analyzing the indexes of American, Japanese and Chinese national RN.

建立了衡量国家资源位的指标体系。 本文开发了一套衡量国家资源位的指标体系，为国家资源位的计量工作提供了依据，为美、日、中国家资源位对比研究奠定了基础。

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Unlike most traders who base their decisions on their favorite indicators, we use multiple market models, which, themselves are made up of multiple indicators.

FORBES: An Interview with Dave Moenning: Moving to Cash and Energy Stocks

National economic conditions are far more important, probably because voters base their opinions on the national media, or national indicators such as the stockmarket.

ECONOMIST: The economy