coalmine
n. 煤坑, … Read the rest
n. 煤坑, … Read the rest
化 鲁奇煤气化炉… Read the rest
*[‘kәulpit]
n. … Read the rest
化 无定结构煤… Read the rest
化 烟煤… Read the rest
*[‘kәulsæk]
n. … Read the rest
*[‘kәuli]
a. … Read the rest
机 黑煤… Read the rest
建 软页岩… Read the rest
堆煤场… Read the rest