The magnetic core was made of the new developed permanent magnetic material, high efficiency, with stainless steel shell.
磁芯采用最新研制的永磁材料制成的，除铁效率高，不锈钢外壳。
The magnetic core was made of the new developed permanent magnetic material, high efficiency, with stainless steel shell.
磁芯采用最新研制的永磁材料制成的，除铁效率高，不锈钢外壳。
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