典型煤的近红外反射光谱特征的方向性研究

杨恩¹, 王世博^2,^*

Study on Directional Near-Infrared Reflectance Spectra of Typical Types of Coal

YANG En¹, WANG Shi-bo^2,^*

贫煤特征波长( λ )反射率极坐标云图 (a): λ =1 400 nm; (b): λ =1 700 nm; (c): λ =1 900 nm; (d): λ =2 200 nm; (e): λ =2 300 nm