applied a shellac finish to the cabinet.
最给这个柜橱打一层虫胶清漆
applied a shellac finish to the cabinet.
最给这个柜橱打一层虫胶清漆
Early electrical workers used it as a coating to insulate coils, and molded it into stand-alone insulators by pressing together layers of shellac-impreg-nated paper.
早期工将它用作涂料,隔离缠绕在一起线圈,还将注满了紫胶纸一层层地压紧制成单独绝缘物。
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