coal-ball
英
['kəʊlb'ɔːl]
美
['kəʊlb'ɔːl]
- 煤结核, 煤层石球
coal-ball的相关资料：
临近单词
coalless
coal
coal processing and conversion
coal mining and gas extraction
coal preparation technological
coal matrix flexibility energy
coal-based activated carbons
coal or rock dynamic disasters
coal and gas pressure outburst
coal transportation technology
coal-fired hot-blast stove
coal hydroliquefaction residue
