The test extract polysaccharides of Psidium guajava leaves by ethanol degreasing method.The extraction rate of polysaccharide is 15.3%, 9.7%.是什么意思_The test extract polysaccharides of Psidium guajava leaves by ethanol degreasing method.The extraction rate of polysaccharide is 15.3%, 9.7%.在线翻译_英语_读音_用法_例句