幾乎世界上的任何地方都可以找到黏土。它是由幾千年來風(fēng)和水作用在巖石上形成的。巖石由此產(chǎn)生了化學(xué)和物理變化。
Clay is found almost everywhere in the world. It is formed by the action of wind and water on rocks over thousands of years. The rocks change in both chemical and physical ways. Chemically, elements like potassium and aluminum are added and taken away. Physically, the rocks break down into smaller a…
幾乎世界上的任何地方都可以找到黏土。它是由幾千年來風(fēng)和水作用在巖石上形成的。巖石由此產(chǎn)生了化學(xué)和物理變化。 從化學(xué)上來說，像鉀和鋁之類的化學(xué)物質(zhì)被增加進(jìn)去，然后帶走。從物理上來說，巖石分解成更小的石塊。經(jīng)過很長一段時間后，有些石塊就會變成黏土。 黏土是很重要的東西，因為全世界都用它來制造各種各樣…