腐植煤的最小反光率是指振动方向平行于煤层理的直线偏光入射到垂直于层理的煤光面上的反光强度,即在该面上测定煤的反光率时旋转载物台一周的最低值。 目前,中、美、苏、日及西德等国都用偏光下最大反光率,西欧其他国家用非偏光 The minimum reflectance of humified coal refers to the reflection intensity of linearly polarized light whose direction of vibration is parallel to the coal seam when it is incident on the smooth surface of coal, that is, the lowest one-week rotation of the stage when measuring the reflectivity of coal value. At present, China, the United States, Japan, West Germany and other countries use the maximum reflectance under polarized light, other countries in Western Europe with non-polarized light