The metamorphosed volcanic rock of the upper member of the Haizhou group is rich in alkali-feldspar (60 to 70%) and high potash feldspar (35 to 60%).是什么意思_The metamorphosed volcanic rock of the upper member of the Haizhou group is rich in alkali-feldspar (60 to 70%) and high potash feldspar (35 to 60%).在线翻译_英语_读音_用法_例句