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1·Analyzed the principle of slow light propagation in Ruby crystal and it's experiment setting, observed the phenomena of slow light propagation.

分析红宝石晶体中的光速减慢原理及实验装置，观测到极慢光速现象。

2·The researchers found that the sand, glass, crystal, marble and Ruby minerals such signs exist.

研究人员发现了沙子、玻璃、水晶、大理石和红宝石之类的矿物存在的迹象。

3·Products include gold or silver with diamond, pearl, ruby, sapphire, crystal and zircon jewelry.

产品包括金银镶嵌钻石，珍珠，红宝石，蓝宝石，水晶，锆石等首饰。

4·Our scope of inlay machining: Pearl, diamond, jade, emerald, ruby, sapphire, nephrite, crystal and so on.

我们的镶嵌加工范围：珍珠、钻石、翡翠、祖母绿、红宝石、蓝宝石、软玉、水晶等等。