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.

早期力工人将它用作涂料，隔离缠绕在线圈，还将注满了紫胶纸层层地压紧制成单独绝缘物。

As both insulator and energy storage media, de-ionized water combines the advantages of high relative permittivity(is about 80), self repairability, low cost and ease of handling.

水质具有高相对常数(约80),而且具有自我恢复能力,在脉冲功率系统中被广泛应用。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要绍了用泡沫塑料保温、密封、防水拱形彩钢屋面特点、构造、材料、设备、施工工艺、生产成本和应用。