系统软件 语言与编译 释文 fifth generation language, 5GL 第五代语言
- coal pyrolysis
- coal quality analysis
- coal quality evaluation
- coal quality physical testing
- coal rank
- coal reaction
- coal remote sensing geological survey
- coal reservoin resilience
- coal reservoir
- coal reservoir gas saturation
- coal reservoir permeability
- coal reservoir pressure
- coal resistance to heat
- coal resources of China
- coal-rich zone
- Coalsack Dark Nebula
- Coalsack Nebula
- coal sample
- coal sample for testing washability
- coal seam
- coal seam deformatiom
- coal-seam floor contour map
- coal series gas
- coal smog
- coal tar