论文部分内容阅读
奥湼日拖拉机厂与列宁格勒林学院共同設計制造了一种ТБ-55型集材拖拉机,效果很好,使集材工序达到完全机械化的程
The Oegeri Tractor Plant and the Leningradring Academy jointly designed and manufactured a ТБ-55 skid tractor that worked well and achieved the complete mechanization process of the skid process.