名词
中文翻译：Unknown
同义词：
['colorimeter', 'spectrophotometer', 'photometer']
例句：
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1. The phthaleinometer was used to measure the acidity of the solution.
使用比色计来测量溶液的酸性。
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2. The colorimeter was used to determine the color intensity of the sample.
使用分光光度计来确定样品的颜色强度。
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3. The photometer was used to measure the absorption spectrum of the sample.
使用分光光度计来测量样品的吸收光谱。