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1. The point spectrum of the light source is crucial for accurate measurement.
光源的点光谱对于精确测量至关重要。
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2. In this experiment, we used a point spectrum analyzer to measure the intensity of the light.
在这个实验中，我们使用了点光谱分析仪来测量光的强度。
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3. The point spectrum of the sample was analyzed to determine its chemical composition.
通过对样品的点光谱进行分析，我们确定了其化学成分。