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单词 canada balsam
释义

WordReference Random House Unabridged Dictionary of American English © 2024
Can′ada bal′sam, 
  1. a pale yellow or greenish, slightly fluorescent, clear, viscous, bitter-tasting, water-insoluble liquid, having a pleasant, aromatic, pinelike odor, and solidifying on exposure to air: obtained from the balsam fir, Abies balsamea, and used chiefly for mounting objects on microscope slides, in the manufacture of fine lacquers, and as a cement for lenses. Also called Canada turpentine, balsam of fir. 
  • 1810–20, American.

Collins Concise English Dictionary © HarperCollins Publishers::
Canada balsam n
  1. a yellow transparent resin obtained from the balsam fir. Because its refractive index is similar to that of glass, it is used as an adhesive in optical devices and as a mounting medium for microscope specimens
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更新时间：2025/2/23 4:48:59