“gemstones enhancement”的概念、定义、翻译、参考文献-科学参考

单词	gemstones enhancement
释义	gemstones enhancement Encyclopedia 工学矿物加工技术释 gemstones enhancement宝石改善运用某种技术方法和处理工艺，改善宝石的外观（颜色、净度或特殊光学效应）、耐久性或可用性，从而提高宝石美学价值和商品价值的过程（不包括对宝石进行切磨、抛光、雕刻和镶嵌等加工方法）。
随便看	noise limit for household appliance noise limit for industrial equipment noise limit for means of conveyance noise limit for moving machiney noise limit for vehicle interior and station platform noise logging noise management noise map noise mapping noise margin noise masking noise noise masking tone noise model noise monitoring noise of aircraft noise of blasting noise of electron tube noise of film & television scene noise of internal combustion engine noise of nuclear power plant Noise Pollution Control noise pollution map noise pollution monitoring noise pollution of fishery environment noise pollution prevention and control law

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