Research workers find it hard to correlate the two sets of figures.

研究人员发现很难使这两组数字互相关连。

Luminiferous gem is the man made modern night shining jewel developed with modern technology by research workers and caused strong echo in gemstone circle.

发光宝石是近期由我国的科学工作者依靠现代科学技术研制出的“现代夜明珠”,在宝石界引起强烈反响。