The exoplanet's atmosphere condenses out minerals such as enstatite, corundum, spinel, and wollastonite.
这颗系外行星大气冷凝后产生矿物，如：顽火辉石、玉、尖晶石和硅灰石。
The results have shown that the brown alundum coatings are high-class neutral refractory coatings and are used with success in iron and steel cast-ings.
试验明,所研究棕玉涂料是一种中性抗粘砂涂料,适用于粘土砂、水玻璃砂及树脂自硬砂铸型和型芯.
The white afrodite erosion creates the reducing of glass hardness and density,AZS corrosion creates hardness to descend,but the density to raise.
门）白泡石侵蚀后造成玻璃硬度和密度下降，钻玉侵蚀后造成硬度下降，但是密度却有所上升。
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Ruby and sapphire, for example, are actually the same mineral, called corundum, with a chemical formula of two aluminums and three oxygens.
例，石和蓝石实际上是同一种矿物，叫做刚玉，化学为Al2O3。
Raindrops made of corundum, which is the material that rubies and sapphires are made of.
由刚玉制成的雨滴，刚玉是石和蓝石的。
Rubies are a gem-quality version of a mineral known as corundum.
石是刚玉矿物中的一种石级品种。
Sapphire is also a form of corundum.
蓝石也是刚玉的一种。
What makes a ruby a ruby instead of normal corundum are impurities in the crystal from the element chromium.
使石成为石而非普通刚玉的原因，在于其晶体中掺杂的铬元素。
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划词翻译
详细解释
大气冷凝后产生矿物，如：顽火辉石、
玉、尖晶石和硅灰石。
明,所研究
，
石和蓝
为Al2O3。
石和蓝
。
