With theory analysis, experiment research and spot test, this paper takes the lead in establishing technology system of gob-side entry retaining with large section or small one.
通过理论分析、实验研究和现场试验，本文率先在国内初步建立了由大断面、小断面沿空留巷组成的综放沿空留巷技术体系。
The vehicle emission test management and emission data analysis have become more important with the development of test method and technology in our country.
随着我国机动车排放检测方法和技术的不断完善，对检测工作管理及检测数据分析提出了越来越高的要求。
Using orthogonal testing on the basis of technology mechanism analysis, the parameters optimization and contrast test for five different technology processes have been carried out.
在工艺机理分析的基础上利用正交试验对五种不同工艺流程进行参数优化和对比研究。
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