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"aragonite: an orthorhombic mineral form of crystalline calcium carbonate, dimorphous with calcite."

结晶富钙碳化物的一种正交晶矿物,具有方解的两种晶态。

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Polar surface waters most likely will become undersaturated for aragonite before the end of this century.

在本世纪结束前,极地海水表层很有变得对霰不饱和。

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TED-Ed(视版)

Mollusks make this special material by placing successive layers of aragonite interspersed with proteins.

动物通过放置散布着蛋白质的连续文石层来制造这特殊材料。

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TED-Ed(视版)

As the slightly more soluble molecule, aragonite can better adapt to more or less acidic environments.

作为稍易溶解的分子,文石可以更好地适应或多或少的酸性环境。

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TED-Ed(视版)

So most mollusk shells have an interior layer of aragonite to maintain their internal pH level.

因此,大多数软动物的外壳都有一层文石内层,以维持其内部 pH 值。

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TED-Ed(视版)

But one form of aragonite is stronger and more versatile than the rest: nacre.

但有一文石比其他文石更坚固、用途更广:珍珠质。

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TED-Ed(视版)

Using special proteins, mollusks can produce two crystal structures out of CaCO3: calcite and aragonite.

使用特殊的蛋白质,软动物可以从 CaCO3 中产生两结构:方解石和文石。

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They have also discovered that the shells of many organisms in the area are short of aragonite, a form of calcium carbonate that gives them strength, but whose formation acid discourages.

他们也发现,这里许多生物的外壳缺少文石—一让这些生物产生力量的碳酸钙形式—但是,它们内的酸性形式阻碍了这物质的合成。

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TED-Ed(视版)

These cells wrap the threat in layers of proteins and aragonite until eventually the cocoon completely absorbs the invader— dissolving the threat into an opalescent sphere of nacre.

这些细胞将威胁包裹在蛋白质和文石层中,直到茧最终完全吸收入侵者——将威胁溶解到乳白色的珍珠质球中。

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