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922D型铲运机是我厂于明年代中期从国外引讲的个讲机冽。如惊测机国产化村税申，粉们曾经作出了改进，但仍有一些问题还需改进。如该型机的变量柱塞系对所用油品要求很高，加大了使用成本；进口该泵价格高县周期长，严重影响了生产；该型机的封闭式油箱在维护保养时也很不方便
922D-type scraper is my factory in the mid-Ming dynasty, speaking from abroad a walkie-talkie 冽. Such as frightened machine made village taxes, powder who have made improvements, but there are still some problems still need improvement. Such as the type of variable piston system on the oil used in demanding, increasing the cost of use; the pump price of imported high county cycle, seriously affected the production; closed-type oil tanker machine maintenance is also very inconvenient