型宝石

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1.

Henceforth, a great attention should be devoted to the research, prospecting and assessment of the alkaline basaltic gem deposits .

今后应重视碱性玄武岩型宝石矿床的研究和找矿评价工作。

www.geojournals.cn

2.

It is quite important for calculating precisely inclination of star facet, upper girdle and lower girdle facets during gem processing .

精确计算星刻面、上腰刻面和下腰刻面的倾角是圆明亮琢型宝石加工的重要问题。

www.ceps.com.tw

3.

What about a necklace set with a heart shaped precious stone ?

买条项链怎么样？坠有心型宝石的。？。

dict.wenguo.com