tractor-drawn two unit articulated roller
... tractor-drawn polydisk plow ==> 机引垂直圆盘犁 tractor-drawn two unit articulated roller ==> 拖式双联路碾 tractor-hauled ==> 拖拉机牵引 ...
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tractor-drawn two unit articulated roller
拖拉机牵引的两单元铰接式滚轮
以上为机器翻译结果，长、整句建议使用 人工翻译 。