Mullite / cordierite composite materials, a new kind of kiln refractory, is applied to various kinds of porcelain products extensively.是什么意思_Mullite / cordierite composite materials, a new kind of kiln refractory, is applied to various kinds of porcelain products extensively.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句