研究小组最初的实验之一是Netra原型机，这是一种只需一部智能手机、相关软件和便宜的光学套件就可以鉴定视力问题的系统。
One of his group's first experiments is the prototype of Netra, a system that can identify problems with a person's eyesight using only a smartphone, software, and inexpensive optical add-ons.
折射率是鉴定宝石的重要依据，折射率图式是确定宝石晶体光学参数必不可少的基本图件。
Refractive index is important to identify gems, and refractivity model is the basic graph for measuring gem crystal optic parameters.
在低级晶族光学特性的研究中，光性符号的确定对未知晶体及矿物的鉴定有着重要的意义。
In the study of optical properties of low class crystal system, the identification of optic sign has important meaning to unknown crystal and mineral determination.
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