guljeolgye
refractometer
réfractomètre ; appareil de mesure de réfraction ; instrument de réfraction
굴절계를 사용하여 액체의 굴절률을 측정합니다.
guljeolgye-reul sayonghayeo aekche-ui guljeollyureul cheugjeonghamnida.
We use a refractometer to measure the refractive index of the liquid.
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