Compared with tradition tractor and implement unit, a self propelled machine not only has simple structure, small unit and high efficiency, but also can be used in the paddy field and special area.
自推进耕耘机械与传统的拖拉机农具机组相比，其结构简单，机组短，效率高，适合在水田和特殊地块作业。
The assembled and tested missile was transported to the launching site by railway line using a special transport-installation unit propelled by a diesel locomotive.
完成总装和测试后的导弹被由内燃机车驱动的运输安装机械经铁轨运至发射工位。
The assembled and tested missile was transported to the launching site by railway line using a special transport-installation unit propelled by a diesel locomotive.
完成总装和测试后的导弹被由内燃机车驱动的运输安装机械经铁轨运至发射工位。
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