neutral clay [化学] 中性白土
Clay minerals in a rock called Esperance clearly indicate that neutral water flowed across the rock some time in the first billion years of its existence.
一块名为“狮石”（Esperance）的岩石里，其中的粘土矿物表明在这块岩石最初的10亿年中的某个时刻时在，曾有中性水从它上面流过。 。
Yellow cinnamon soil is clay, neutral or acidic.
陕南茶园，土质多为黄褐土、黄棕壤。
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