Chinese translation for "硬灰煤"

bone coal(black)
hard ash coal

Similar Words：

"硬环棱螺" Chinese translation, "硬黄熟期" Chinese translation, "硬黄熟期 坚糊熟期" Chinese translation, "硬黄铜" Chinese translation, "硬黄质结晶" Chinese translation, "硬灰岩层" Chinese translation, "硬辉沥青" Chinese translation, "硬恢复" Chinese translation, "硬回车" Chinese translation, "硬回火" Chinese translation