The study on the properties of the system doped by Cr indicated that the MPB of the tetragonal and rhombohedral phase lay in a broad composition region.是什么意思_The study on the properties of the system doped by Cr indicated that the MPB of the tetragonal and rhombohedral phase lay in a broad composition region.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句