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单词 refractometer
释义 refractometer
[´rē´frak`täm·ǝd·ǝr]
ENGINEERING
An instrument used to measure the index of refraction of a substance in any one of several ways, such as measurement of the refraction produced by a prism, measurement of the critical angle, observation of an interference pattern produced by passing light through the substance, and measurement of the substance's dielectric constant.
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