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词汇 refractometer
释义

Definition of refractometer in English:

refractometer

noun ˌriːfrakˈtɒmɪtəriˌfrakˈtämətər
  • An instrument for measuring a refractive index.

    折射计;屈光计

    Example sentencesExamples
    • Preventive maintenance must be performed on all equipment related to the urinalysis including analyzers, pipettors, refrigerators, microscopes and refractometers.
    • The refractometer measures the refractive index of the total soluble solids.
    • In its simplest form, grape sampling might consist of selecting some berries haphazardly from the vineyard and expressing juice into a refractometer to measure sugar content.
    • For most gemstones the refractive index can be measured with a gemmologist's refractometer, but the refractive indices of diamond, some zircons, and certain other gem materials are too high to be measured with most of these instruments.
    • Discerning the difference between a gas and liquid thus requires a refractometer that can measure slight differences between critical angles and reflection intensities.

Derivatives

  • refractometric

  • adjective ˌriːfraktəˈmɛtrɪk
    • Only the sedimentation equilibrium experiments with the highest loading concentrations were observed with the refractometric Rayleigh optics.
      Example sentencesExamples
      • According to Moreau-Rio et al., the overall consumer appreciation is related more to the titratable acidity / refractometric index ratio than to the soluble sugars content alone.
  • refractometry

  • noun
    • In a survey of fruit from thirty-seven temperate-zone species, refractometry was found to substantially overestimate carbohydrate solute concentrations because of the contributions of nonsugar components, particularly lipids.
      Example sentencesExamples
      • It is common for growers to measure the soluble solid content of fruit using refractometry, as it represents a quick and portable method for the determination of total sugar content under field conditions.
      • Sucrose in the phloem sap was measured by refractometry.

Definition of refractometer in US English:

refractometer

nounriˌfrakˈtämətər
  • An instrument for measuring a refractive index.

    折射计;屈光计

    Example sentencesExamples
    • Preventive maintenance must be performed on all equipment related to the urinalysis including analyzers, pipettors, refrigerators, microscopes and refractometers.
    • Discerning the difference between a gas and liquid thus requires a refractometer that can measure slight differences between critical angles and reflection intensities.
    • In its simplest form, grape sampling might consist of selecting some berries haphazardly from the vineyard and expressing juice into a refractometer to measure sugar content.
    • The refractometer measures the refractive index of the total soluble solids.
    • For most gemstones the refractive index can be measured with a gemmologist's refractometer, but the refractive indices of diamond, some zircons, and certain other gem materials are too high to be measured with most of these instruments.
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