coal field
短语词组
- fuxin coal -field 阜新煤田
- discharging coal dust field 平原型灰场
- Zhunnan coal -field 准南煤田
- coal particles field 煤粉颗粒场
- pulverized coal concentration field 煤粉浓度场
- coal combustion field 煤燃烧领域
- Huainan coal -field 淮南煤田
- coal mining field 煤矿区 返回 coal field