Gem Identification Certificate 宝石鉴定证书
Gem &Identification 宝石与鉴定
gem identification kit 宝石鉴定箱
gem identification paper 宝石鉴定证书
The co-educational' Gem Identification and Business Management' Minor has obtained nice effects and extensive welcome since it was founded two years ago.
前言： “珠宝鉴定与营销管理”跨校辅修专业开设二年来，得到了上海市东北片区高校学生的广泛欢迎，取得了较好的效果。
The infrared spectroscope has been widely used in gem research and identification. The direct transmission technique is the most common method in measuring infrared spectrum of gemstone.
红外光谱仪已广泛地应用于宝石研究与鉴定，其中直接透射技术使用最广泛。
应用推荐