Again combined with the optimization of the rare earth composition in A side, a kind of MmNi 3.55 Co 0.75 Mn 0.4 Al 0.3 B x alloy (Mm: mischmetal) with excellent rate characteristics has been developed.是什么意思_Again combined with the optimization of the rare earth composition in A side, a kind of MmNi 3.55 Co 0.75 Mn 0.4 Al 0.3 B x alloy (Mm: mischmetal) with excellent rate characteristics has been developed.在线翻译_英语_读音_用法_例句