求翻译：核桃的另一个特点是磷含量较多，每100克含磷294毫克，超过各种鲜果和干果。磷是人体不可缺少的元素，是组成磷脂的必需物质，而磷脂能使大脑产生一种促进记忆的物质是什么意思？

Another characteristic of Walnut is more phosphorus, p 294 mg per 100 grams, more than all kinds of fresh fruit and nuts. Phosphorus is the indispensable element of the body, is composed of Phospholipid essential substances, can Phospholipid brain--a memory of substance acetylcholine. If the PE deficiency, caused brain cell membrane relaxation, slow thinking.