With option B the inner magnetassembly and seal ships separate.
在用选项B的情况下，磁铁装置及密封分开传送。
2
After securing the top adapter, the magnetassembly and seal must be assembled.
在紧固装上顶部适配器后，磁铁装置和密封须安装好。
3
On account of the problems of magnetic circuit design of magnetassembly at home and abroad, a permanent magnetic filter with a unique magnetic circuit was developed.