纳米塑料中用作纳米无机相材料的蒙脱土（MMT），是我国丰产的一类天然粘土矿物。
MMT which is used as nanometre inorganic phase in nanometre plastic is a kind of rich natural clay mineral in our country.
摘要珍珠层是一种天然的纳米生物陶瓷材料，一直是生物矿物材料学者研究的焦点。
Pearls are organic gems , created when an oyster covers a foreign object with beautiful layers of nacre.
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