标准号:IS 9127 Pt.2-1979
发布日期:1979/10/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围: This standard ( Part II ) covers the procedure for the preparation of polished coal specimen block or of a particulate block ( coal pellet ) from a sample of crushed coal for microscopic examination under reflected light.