The natural properties and characteristics of shellac resin and its application in producing optical polishing pills are described.
本文讨论了紫胶树脂结合剂的一般性质和特性，及其在加工光学抛光片中的应用。
The natural properties and characteristics of shellac resin and its application in fabricating optical polishing pills are descibed.
讨论了紫胶树脂的一般性质、特性，及其在加工光学抛光片中的应用。
Base on the knots, application of shellac varnish resin parts closed, oily putty inlaying nailhole place application.
基层上的节疤、松脂部位应用虫胶漆封闭，钉眼处应用油性腻子嵌补。
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