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系统地分析了922D型铲运机采用国产化液压元件的有关问题、试验结果和改进措施，为生产和使用井下铲运机的有关单位提供参考。
This paper systematically analyzes the problems, test results and improvement measures of domestic-made hydraulic components of 922D scraper. It provides a reference for the production and use of relevant units of the scraper.