freshwater cultured pearl meaning in Chinese

淡水养殖珍珠

Powder x - ray diffraction analysis and micro - raman spectra were used to study the mineral composition of chinese freshwater cultured pearls from zhuji , zhejiang province
摘要采用粉末x射线衍射分析及显微激光拉曼光谱对三角帆蚌养殖珍珠的矿物组成进行了研究。
In conclusion , the freshwater cultured pearls produced by mussel hyriopsis cumingii contain no calcites , and this is obviously different from characteristics of saltwater cultured pearls
三角，帆蚌淡水养殖珍珠中不存在方解石，这与海水养殖珍珠中存在方解石明显不同。
Compare a 5mm freshwater cultured pearl with a 10mm south sea cultured pearl and the difference in the amount of nacre is obvious . the difference in luster is as clearly visible as the difference in the pearl sizes
所以当光线照射到珍珠上以后，一部分被表面反射，而另一部分则进入珍珠内部，被另一层珍珠层反射，当然，还会有一部分再进入到更深的珍珠层。