查询词典 calcium carbonate

Trees play an important role in the sequestration of atmospheric CO2 in magnesium and calcium carbonate rocks.

在二氧化碳结合成镁、钙碳酸盐的过程中，树木扮演着一个重要的角色：当山体增长，岩石会分裂开来，然后被运送到丘陵上，接着树木会使埋藏在泥土中的岩石分解成其他矿物，然后这些矿物就会跟空气中的二氧化碳结合。

But marine scientist Justin Ries of the University of North Carolina, Chapel Hill, hypothesized that not all ocean organisms would respond the same way to acidity because they use different forms of calcium carbonate for their shells.

北卡罗莱纳大学教堂山分校的海洋科学家贾斯廷·里斯提出一个假设：并不是所有的海洋生物对酸性表现出相同的反应，因为它们是利用不同类型的碳酸钙来作为外壳的。

The findings indicate that there are many micro-crannies developed in marlite, which can be seen under the Scanning Electron Microscope. The micro-crannies are the precondition of karstification process. Also, the calcium carbonate is dissolved through some chemical processes, and lots of mineral mud are carried away by mechanic erosion. The karstification process results in not only mineral component transformation, but also the rock mass structure alterations.

结果表明：微观下泥灰岩岩石中发育许多微小的裂隙，为溶蚀作用的进行提供了前提条件，另外泥灰岩中大量的泥质物随可溶岩的化学溶蚀过程发生了机械侵蚀作用：泥灰岩的溶蚀作用一方面引起矿物成分发生改变，另一方面导致岩石结构的变化。

The effects of emulsions, pigments, conventional fillers, heat-insulation fillers and film thickness on the reflection and heat-insulation properties under infrared lamp are investigated in order to find the best materials for the heat-insulation coatings. It is found that both the titanium dioxide with high refractive index and the diatomite powder with micro pores possess the optimal reflection and heat-insulation properties, calcium carbonate also has sonic heat-insulation effect. However, the filler such as meerschaum, which in theory possesses the effect, has not shown heat-insulation function.

通过研究涂料配方中所用乳液、颜料、常规填料和隔热填料在红外灯下的反射、隔热和保温性能，发现高折射率的二氧化钛和含有微孔的硅藻土具有最佳的反射和隔热保温效果，轻质碳酸钙和重质碳酸钙具有一定的隔热保温作用，而理论上具有隔热保温效果的填料海泡石等并没有预期的效果。

Product specifications: size from 200 mesh to 2000 eyes, whiteness from 90 to 97 , calcium carbonate content of more than 98%.

产品规格：细度从200目到2000目，白度从90°到97°，碳酸钙含量在98%以上。

Nano-calcium carbonate （nano-CaCO3） particle was surface modified with methacrylic acid in a medium of ethanol.

在醇相中用具反应活性的甲基丙烯酸对纳米碳酸钙（CaCO3）进行表面处理，制成分散体系。

Calcium carbonate, Maalox, Mylanta or Milk of Magnesia may also be used.

还可以使用碳酸钙、氢氧化铝和氢氧化镁混合物或氧化镁乳剂。

The innermost layer of mollusc shells is called mother-of-pearl. It is a biomineral consisting of calcium carbonate and organic material.

在最里层的软体动物被称作珍珠母，它是一种组成碳酸钙和有机物的矿物质。

A real pearl is a hard, rounded object composed of calcium carbonate, created within a living mollusk

真正的珍珠是一个坚硬的，圆形物体，由碳酸钙组成，由活的软体动物所创造。

Pearls are a result of the reaction of mollusks irritation to nacre which is made up of tiny crystals of calcium carbonate.

珍珠是一种软体动物反应的刺激而珍珠是由微小的碳酸钙晶体了。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。