| |||
硬〔白,红〕煤 | |||
无烟煤、硬煤、白煤 | |||
硬白煤 | |||
无痂煤 | |||
无烟煤烟煤经变质作用转变成煤化程度高的煤。其挥发度低、密度大、着火温度高、无黏结性,燃烧时多不冒烟 | |||
无烟煤 | |||
白煤; 硬煤 |
anthracite : 53 phrases in 11 subjects |
Architecture | 3 |
Chemistry | 1 |
Earth sciences | 2 |
Ecology | 3 |
Electronics | 2 |
General | 2 |
Metallurgy | 9 |
Oil / petroleum | 2 |
Space | 1 |
Technology | 27 |
Water resources | 1 |