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词汇 molecular sieve
释义

Definition of molecular sieve in English:

molecular sieve

noun
  • A crystalline substance (especially a zeolite) with pores of molecular dimensions which permit the passage of molecules below a certain size.

    分子筛

    Example sentencesExamples
    • Butylated hydroxytoluene was added to the reaction mixture to prevent oxidation, and molecular sieves were added to keep the solvent dry.
    • They have anchored bimetallic catalysts to the insides of such molecular sieves and have found that they can selectively hydrogenate cyclic polyenes.
    • Since DNA molecules have much higher molecular weights than proteins, the molecular sieve used in electrophoresis of DNA must be different as well.
    • Various jelly-like substances can act as molecular sieves.
    • Zeolite molecular sieves can also segregate molecules of the same size but different electrical characteristics.

Definition of molecular sieve in US English:

molecular sieve

noun
  • A crystalline substance (especially a zeolite) with pores of molecular dimensions which permit the passage of molecules below a certain size.

    分子筛

    Example sentencesExamples
    • Butylated hydroxytoluene was added to the reaction mixture to prevent oxidation, and molecular sieves were added to keep the solvent dry.
    • Various jelly-like substances can act as molecular sieves.
    • Zeolite molecular sieves can also segregate molecules of the same size but different electrical characteristics.
    • Since DNA molecules have much higher molecular weights than proteins, the molecular sieve used in electrophoresis of DNA must be different as well.
    • They have anchored bimetallic catalysts to the insides of such molecular sieves and have found that they can selectively hydrogenate cyclic polyenes.
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