名词
中文翻译：分光计
同义词：
['refraction meter', 'refractograph例句：1. The scientist used a refractometer to measure the refractive index of the liquid.（科学家使用折射计来测量液体的折射指数。）']
例句：
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1. The scientist used a refractometer to measure the refractive index of the liquid.
科学家使用折射计来测量液体的折射指数。
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2. The refractometer was used to determine the density of the oil.
折射计被用来测定油的密度。
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3. The refractometer was used to measure the angle of incidence and the angle of reflection.
折射计被用来测量入射角和反射角。