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
力工人将它用作涂料，隔离缠绕在一起线圈，还将注满了紫胶纸一
地压紧制成单独绝缘物。
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.
早力工人将它用作涂料，隔离缠绕在一起线圈，还将注满了紫胶纸一地压紧制成单独绝缘物。
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