research progress and development trend 研究进展及发展趋势
The current progress and development trend in the study of safety theory of field flow in goaf are analyzed.
分析了当前采空区场流安全理论研究的最新进展和发展趋势。
Research progress and development trend of iron oxide pigments produced by different industrial wastes and by-products are briefly introduced.
简述了以不同工业废副原料制备铁系颜料的研究进展及发展趋势。
The new production progress of caprolactam are introduced, that green processes are the trend of technological research and development.
介绍了己内酰胺的生产技术新进展，其中绿色生产工艺是今后的发展趋势。
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