self-purification activity 基本例句 自净活性 The results showed sucrose-based polymers could increase the net activity of sucrose-metabolizing enzymes, enhance the accumulation of sucrose and the fruit quality.结果表明,蔗糖基聚合物处理可提高圣女果采后蔗糖代谢相关酶的净活性,有利于蔗糖的积累和品质的改善。