coal field
短语词组
- fuxin coal -field 阜新煤田
- discharging coal dust field 平原型灰場
- Zhunnan coal -field 準南煤田
- coal particles field 煤粉顆粒場
- pulverized coal concentration field 煤粉濃度場
- coal combustion field 煤燃燒領域
- Huainan coal -field 淮南煤田
- coal mining field 煤鑛區 返回 coal field