单词：slack coal
slack coal的用法和样例：
例句
- The trial and industrial practice demonstrate that blast furnace pulverizing coal injection lead extraction process is successful and effective.试验和工业实践证明，鼓风炉粉煤喷吹炼铅工艺是成功有效的。
- The technology of coal powder spurted burning is applied in the annealing furnace for low carbon steel wire heated with coal powder.煤粉加热低碳钢丝退火炉采用粉煤喷射燃烧技术，节能效果显著，环境污染有所改善，是值得推广的炉型。
- A worker pauses to shield his eyes while moving coal in Ningxia Province.图中是宁夏的一个煤矿，一个工厂在铲煤途中停下脚步，护住眼睛，防止煤屑进入。
单词：slack coal 相关文章
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