metallurgical coal是什么意思 metallurgical coal怎么读
metallurgical coal的用法和样例
- The necessity of expanded coal rank for CWM production and saving coking coal resources were discussed in this paper.
摘要阐述了节约炼焦煤资源，扩大制备水煤浆煤种范围的必要性。 - Instead of pussyfooting around with coking coal, the west may one day address the most egregious imbalance of all.
与其在炼焦煤问题上纠缠，西方有朝一日也许会针对一切失衡中最大的失衡。
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