METHODS: the theory of price elasticity in economics was applied for the analysis.
方法：运用经济学中的弹性理论进行分析。
Colorimeter based on optical integral theory has the advantages of simple structure, fast measuring speed, lower price and so on, so it is broadly applied in the quality control process.
采用光学积分原理设计的光电色度仪器，由于其结构简单、测量速度快、成本低等优点已被广泛地应用在产品的色度检验控制过程中。
Colorimeter based on optical integral theory has the advantages of simple structure, fast measuring speed, lower price and so on, so it is broadly applied in the quality control process.
采用光学积分原理设计的光电色度仪器，由于其结构简单、测量速度快、成本低等优点已被广泛地应用在产品的色度检验控制过程中。
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