本文简要介绍了国内外对煤的化学结构，及其在溶剂精炼工艺中的特性研究的主要成果和结论。
This paper reviews the main achievements and conclusions in research of coal chemical structure and characteristics in solvent refining processes in the world.
最后，只要科学家们再精炼总结一下，就能得到蛋白的结构。
The scientists then refined it and were able to completely determine the protein's structure.
本文介绍了倾动炉精炼杂铜的工艺过程及倾动炉的炉体结构，列举了倾动炉的主要性能参数，并指出其优点及不足。
The article introduces process and structure of the tilting furnace, enumerates the main performance parameters and points out its advantage and deficiency.
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