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.
早期的电力工人将它用作涂料,绕在一起的线圈,还将注满了紫胶的纸一层层地压紧制成单独的绝缘物。
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.
早期的电力工人将它用作涂料,绕在一起的线圈,还将注满了紫胶的纸一层层地压紧制成单独的绝缘物。
Kind of moisture expellable, smell preventive shoe is characterized by that the whole shoe liner is made into a form of gas pump which can expel the moist air out in the shoe.
本发公开了一种能
湿防臭、
帮对脚部的压紧力大小可以由调节气压来控制的,特别跟脚而又不影响整体外形的
。
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