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1. The four-color spectrophotometer was used to analyze the chemical composition of the sample.
使用四色分光光度计分析了样品的化学成分。
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2.The four-color spectrophotometric system is widely used in industrial processes for quality control.
四色分光光度计系统在工业生产过程中广泛用于质量控制。
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3.In this study, we developed a four-color photometric system to detect and quantify trace metals in water samples.
在本研究中，我们开发了一种四色光度测量系统来检测和量化水样中的痕金属。