A resinous secretion of the lac insect deposited on trees and used in making shellac.

 
  • 紫膠,蟲(chóng)膠由紫膠蟲(chóng)分泌的沉積于樹(shù)上的樹(shù)脂分泌物,用于制造蟲(chóng)膠清漆
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