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单词 ester gum
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ester gum′, [Chem.]
  1. Chemistryany of several hard resins produced by the esterification of a natural resin, esp. rosin, with a polyhydric alcohol, chiefly glycerol: used in the manufacture of paints, varnishes, and lacquers.
  • 1935–40

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