马家塬M21出土一件料珠的成分和风化层的研究
王若苏1, 孙凤1,2,*, 先怡衡1

Study on the Composition and Weathered Layer of a Silicate Bead Excavated From Ma-Jia-Yuan Cemetery M21
WANG Ruo-su1, SUN Feng1,2,*, XIAN Yi-heng1
蓝色(a)、 浅蓝(b)色颗粒的拉曼光谱图