n.蛋白石,猫眼石,乳色玻璃( opal的名词复数 );
例句:
Study on modified opal as stabilizer in hydrogen peroxide bleaching
改性蛋白石用作纸浆H2O2漂白稳定剂的研究
We have an extensive range of exclusive Black Fire Opals.
我们拥有一系列的珍贵的带红色的黑澳宝(火澳宝)。
Analysis of Opal Phytoliths and Identification of Chinese Herbal Medicine
植物硅酸体分析与中草药鉴定